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The Murder of Sharon Hammack | Bloodline Detectives with Nancy Grace

April 27, 2025 / 41:46

This episode of "Bloodline Detectives" covers the 1996 murder of Sharon Hammack in Grand Rapids, Michigan, and the subsequent investigation into a possible serial killer responsible for multiple unsolved murders.

Nancy Grace introduces the case, detailing how two men discovered Hammack's body wrapped in a blanket on the roadside. The investigation reveals that she was a sex worker and a mother of two, leading to discussions about the challenges faced by law enforcement in identifying her killer.

Key guests, including John Tuinhoff and Paul Van Rhee, discuss the forensic evidence collected at the scene and the difficulties of solving the case with limited DNA technology in the 1990s. The episode highlights the emotional impact on Hammack's family, particularly her sister, Tina De Young, who shares her grief and longing for justice.

As the investigation progresses, the episode reveals how advancements in forensic science, particularly investigative genetic genealogy, eventually lead to the identification of Garry Artman as a suspect. Artman's violent history and connection to the area are examined, culminating in his arrest in 2022.

The episode concludes with the trial and conviction of Artman, who is found guilty of Hammack's murder and other crimes. The impact of the case on the victims' families and the importance of modern forensic techniques in solving cold cases are emphasized.

TL;DR

The episode details the 1996 murder of Sharon Hammack and the eventual capture of her killer, Garry Artman, through advanced forensic techniques.

Episode

41:46
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[OMINOUS MUSIC]
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NANCY GRACE: Grand Rapids, Michigan,
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1996, police get a 911 call.
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Two men say they found a body dumped on the side of the road.
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PAUL VAN RHEE: And it looked to them at the time
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like a white blanket that was wrapped around an object.
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Once they got out of their truck,
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it was immediately apparent to them that this was a body.
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NANCY GRACE: Fear grips the community.
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It's not the only body discovered
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in the Grand Rapids area.
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[SIRENS WAILING]
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JOHN TUINHOFF: In the 1990s, there were approximately
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11 murders in the Grand Rapids area and surrounding counties.
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Typically, it would be a murder, and then
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the body would be found the next day or even months later.
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NANCY GRACE: Police exhaust all leads
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for a possible serial killer.
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The case goes cold.
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Can new, groundbreaking forensic science
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catch a killer after all this time?
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This is the story of a 26-year search
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for a serial killer who may have murdered as many as 11 women.
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I'm Nancy Grace.
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This is "Bloodline Detectives."
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[THEME MUSIC]
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[PENSIVE MUSIC]
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NANCY GRACE: Grand Rapids, Michigan, 1996,
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a small city only three hours northeast of Chicago,
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it's nicknamed "Furniture City" because of its
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booming home industry.
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JOHN TUINHOFF: In 1996, there were
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a lot of murders in Kent County at that time
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and in the city of Grand Rapids.
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As most metropolitan cities, there
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are times where crime does peak, and there's
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times where it's not as bad.
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NANCY GRACE: October 3, 1996, two men
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on their way to work spot something unusual on the side
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of the road.
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Once they got out of their truck,
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it was immediately apparent to them that this was a body.
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And then the other one got into the truck
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and had to drive to a hotel to make the phone call-- we didn't
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have cell phones back then-- and said that they were
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there waiting for the police.
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While he was doing that, the other gentleman
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stayed with the body.
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But apparently, a number of people
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kept coming over and trying to get to the body and to see it,
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and he was just trying to keep the area clear.
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NANCY GRACE: Police arrive, and they immediately
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cordon off the area.
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BLAIR LACHMAN: When they first got there,
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they combed the area for potential evidence.
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There was a lot of stuff that were-- you know, if you're
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on the side of a road, where people are
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dumping cigarettes and beer bottles,
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there were plenty of those.
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So they preserved that, not knowing if they were
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related to the crime scene.
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Then they took the body and placed it on a gurney.
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They took that body to the medical examiner's
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office to do the autopsy.
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So no one actually saw anything until they
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got back to the morgue.
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NANCY GRACE: The body in the blanket
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is soon identified as Sharon Hammack.
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She's a local woman who's been known as a sex worker.
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PAUL VAN RHEE: She was in her late 20s.
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We learned that she did have two children of her own,
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who she put up for adoption because she didn't want them
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to be part of the lifestyle that she was part of, which included
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the prostitution and drug use.
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She also had a family of two sisters that we knew about.
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Whenever these circumstances come up
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in all of our investigations into homicides,
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it's hard to talk to the family and tell the family what has
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happened to their loved one.
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TINA DE YOUNG: I had worked a long shift that day,
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and I remember feeling out of sorts,
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like something wasn't right.
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And my boyfriend at the time called me, and he said,
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I have to talk to you when you come home.
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And I'm like, just tell me.
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He's like, no, I'm not telling you while you're driving.
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I came in the door, and he said, your sister--
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and I knew who he was talking about because she was
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heading down the wrong path.
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He said, they found your sister, and she's dead.
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And I lost it.
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I just wanted to go be with my mom.
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That's all I wanted.
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I wanted to go be with my mom because I knew
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it was gonna break her heart.
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But she knew that day was coming.
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[CRYING]
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When they knocked on the door, they told
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my parents that they had found a woman
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dropped on 76th and Patterson.
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And my mom goes, are you sure it's her?
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And they said, we're pretty positive it's her.
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And my mom lost it.
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NANCY GRACE: Sharon Hammack's death
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is not the only murder investigation
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going on in Grand Rapids.
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JOHN TUINHOFF: In the 1990s, there were approximately
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11 murders in the Grand Rapids area and surrounding counties.
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Typically, it would be a murder, and then the body
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would be found the next day or even months later by someone.
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BLAIR LACHMAN: I think people were pretty
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convinced that there was a serial killer
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on the loose in Grand Rapids.
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And it was weird because you had this series of rapes and murders
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that happened in that time period, and then they stopped.
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I think they were convinced that the serial killer took
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his show on the road and left.
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NANCY GRACE: Police talk to Sharon
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Hammack's family to get a clearer
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picture of her final hours.
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JOHN TUINHOFF: Investigators in 1996
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would have started looking at acquaintances of Sharon Hammack
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to try to get an idea of the last 24 hours of her life,
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and also a pattern of life for her
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and who she was associating with,
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what she was involved with, and who may have some information
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on what had happened to her.
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TINA DE YOUNG: She was so beautiful.
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So beautiful.
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She just got hooked up with the wrong people
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and was led down that path.
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My mother had eight children and I was the baby of eight.
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She was so protective of me.
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I missed so many memories with her
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because he chose that she was better off dead,
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that nobody was gonna miss her.
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But he's wrong.
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Is there a sadistic serial killer lurking in Grand Rapids?
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Can police find him before he strikes again?
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We find out next on "Bloodline Detectives."
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[AUDIO LOGO]
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[AUDIO LOGO]
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[SUSPENSEFUL MUSIC]
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NANCY GRACE: Grand Rapids, Michigan, 1996,
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police get a call from two men who find a body wrapped
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in a blanket on the side of the road,
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the victim ID'd as 29-year-old mother-of-two Sharon Hammack.
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Investigators look for clues left behind by the killer.
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JOHN TUINHOFF: Investigators conducted a search warrant
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at Sharon Hammack's house and went through the house
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and located things of interest to them, including
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beer bottles and other items that a guest could have had,
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for fingerprints.
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And also, they did examine her vehicle as well for any chances
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of identifying a possible suspect or someone that
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could have been in her vehicle.
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NANCY GRACE: For investigators, the scene of any crime
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is the first stop for clues left behind.
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The condition of the victim, the victim's injuries,
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even the victim's position could provide vital clues.
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In the case of Sharon Hammack, the coroner
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decides to remove Sharon's body from the scene,
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still wrapped in a blanket.
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JOHN TUINHOFF: Sharon Hammack was found, once she was
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unwrapped from the blanket, to have her hands behind her back,
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tied with shoe string, and also her feet tied together
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and pulled up towards her hands so that she would be laying
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on her stomach with her hands and feet tied together
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so that she could not move, and she would be rolling
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pretty much on her stomach.
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It was a very unique situation,
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I believe, that for them to open that blanket up and find her
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bound and tied in that manner.
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ELIZABETH BARTLETT: With each piece of evidence
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being removed from the victim's body,
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it also has to be preserved.
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And so each of those cords would have
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to be removed very carefully and placed in evidence bags
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to preserve any potential evidence, DNA, anything
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that they could down the line.
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JOHN TUINHOFF: Reviewing the autopsy photos 27 years later,
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they are very disturbing on just how the last moments of Sharon's
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life would have been.
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PAUL VAN RHEE: An autopsy is critical to the investigation
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because it's a way for us to look for additional evidence
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that might be on the body to understand what
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the cause of death may be, also, to take
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measurements of potential weapons that were used.
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In this case, it was a knife.
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There was confirmed stabbed wounds on her head.
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There was also definitely indication
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that she had been strangled with bruises around her neck.
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JOHN TUINHOFF: Sharon had bruising
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all over her body, which would indicate that there
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was a struggle with her.
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And one thing that I could note that I noticed from photographs
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is that her fingers, while she was bound behind her back,
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her fingers were clenched, and her fingers were
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through the strings of the bindings that were holding
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her hands behind her back.
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So you could tell that Sharon was
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fighting until her last breath.
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BLAIR LACHMAN: She was strangled with such force,
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she had the pearl necklace wrapped on her neck.
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It wasn't used to strangle her.
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It was the force of the hands around the neck
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squeezing created an indentation of the pearl necklace
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on her neck.
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PAUL VAN RHEE: DNA was very new at the time.
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It was a new form of investigation, a new science.
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Although they knew that that was a possibility, at that time,
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evidence was taken and kept and looked into.
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NANCY GRACE: A tragic blow in this case
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comes during the examination.
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During the autopsy, we found out that she was
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pregnant when she was murdered.
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NANCY GRACE: Now that the autopsy is complete,
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Sharon Hammack's family can finally bury their loved one.
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TINA DE YOUNG: I remember having a closed casket
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because that's what my mom wanted.
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It was horrible, horrible.
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I just wanted answers.
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I just wanted to know who took her from me.
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NANCY GRACE: Law enforcement determined
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to provide answers to Sharon Hammack's grieving family,
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but it's 1996.
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DNA science is still in its infancy,
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so police must rely on old-school methods
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to search for her killer.
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JOEL SCHULTZE: There's four basic blood
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types that people have.
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Type O, 45% of the population has.
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So if you have a type that almost 50% of the population
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has, it doesn't really give you much information.
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The other three, some of them are under 10%.
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But again, there's only four types.
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So it doesn't discriminate between people very well.
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JOHN TUINHOFF: Several police agencies
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in Metro Grand Rapids formed a task force to investigate
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the prostitution murders.
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And the detectives assigned at that time
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received hundreds and hundreds of tips
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from people calling in reference this case.
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Nothing was ever revealed with any of those investigations
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with regard to Sharon Hammack.
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They were trying to put together potential suspects by looking
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at boyfriends or friends of Sharon
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and anybody that may have been a person
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in common with any of these other girls
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that were also found.
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BLAIR LACHMAN: So she's walking the streets,
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so there's no witness to it.
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They interviewed other prostitutes.
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They interviewed people that, I guess, for a better term,
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labeled pimps, people who might know.
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Dozens of people they interviewed and nobody
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had any information.
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Sometimes they'd say, OK, you might wanna check this person.
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So then they'd go check that person, and then that person
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wouldn't pan out.
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Sometimes there were suspects that they would exclude,
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but then they might come back to them
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again and try to re-interview.
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JOHN TUINHOFF: It was the belief of investigators
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that our suspect was someone that could be transient
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or could be a truck driver that could be traveling the roads.
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And that's why we were finding bodies on the sides of roads.
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NANCY GRACE: One by one, all the leads in the search for Sharon
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Hammack's killer go dry.
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JOEL SCHULTZE: I came to the Michigan State Police in 1997
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and helped start the DNA unit in Grand Rapids laboratory.
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And the-- obviously, the homicide had already taken
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place.
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We started doing DNA analysis at the Grand Rapids laboratory
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in 1999, getting more complete DNA profiles.
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ELIZABETH BARTLETT: They were able to obtain
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DNA from some of the items.
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The blanket had male DNA on it.
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So then the next problem became whose DNA is it.
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BLAIR LACHMAN: All the DNA did at that time was
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eliminate potential suspects.
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NANCY GRACE: Grand Rapids Police have the killer's DNA profile,
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but they don't have a match.
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They also have 10 other unsolved murders.
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Can a groundbreaking new forensic tool
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crack this very gruesome case?
00:14:01
That's next on "Bloodline Detectives."
00:14:05
[AUDIO LOGO]
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[AUDIO LOGO]
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[SUSPENSEFUL MUSIC]
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NANCY GRACE: Grand Rapids, Michigan, 2008.
00:14:16
Detectives have a DNA sample from the 1996 murder
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of 29-year-old Sharon Hammack, a mother of two,
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her body found wrapped in a blanket on the side of the road.
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Investigators fear they've got a serial killer on their hands
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because Sharon's death is one of 11 similar unsolved murders,
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all in the same area.
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Now police turn to forensic science and CODIS for answers.
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CODIS is the Combined DNA Indexing System,
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and that's set up to track offenders convicted of crimes
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to potentially identify them if they've been involved
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in any other unsolved crimes.
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BLAIR LACHMAN: Every time someone
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commits a crime or a felony, their DNA is extracted.
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It's just a simple swab.
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You just take that.
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And a sample is created, and it's entered into this system.
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And there's millions of people in that database.
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You're looking to see if someone, for some reason,
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has been entered into that system,
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whether it's from a felony, from a rape.
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However they get into that system,
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if they're in that system, you're looking for a match.
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NANCY GRACE: CODIS is the National DNA
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database for convicted felons.
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In this case, investigators do not get a match on CODIS,
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and that means the suspect in the murders
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has never been arrested for a serious crime.
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The DNA sample, however, leads Michigan investigators
00:15:49
to a similar crime in another state.
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JOEL SCHULTZE: In 2008, we had a CODIS association, what we refer
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to as a forensic hit, which is a case-to-case hit
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with a case out of Maryland.
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And exchanging information, we found
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that it was a 2006 homicide that occurred in Maryland.
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We issued that report to the investigators,
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and then they were able to talk with the Maryland
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investigators, the local ones.
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They had some information in Maryland
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that pointed towards the suspect being--
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possibly being a truck driver.
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PAUL VAN RHEE: That case was a young female that was also
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found on the side of the road.
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She had been killed by stabbing, and her name was Dusty Shuck.
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She was found on the side of the highway in Maryland.
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And she also had DNA evidence from potentially the suspect
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on her, and that DNA evidence on her
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matched a DNA profile that was obtained from Sharon Hammack.
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We had DNA, but we have no one to match it up to because he
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was never in the system.
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So basically, we were up in the air.
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And he would either have to get caught,
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or we would never find him.
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NANCY GRACE: So far, this serial killer stays just out of reach
00:17:07
for the Kent County Sheriff's.
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That is until they hear the infamous Golden
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State Killer has been caught using
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a brand new forensic science--
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investigative genetic genealogy.
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PAUL VAN RHEE: With a good-enough DNA profile
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or suspect DNA profile, that it was
00:17:29
possible to submit that DNA for processing
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and utilize different databases that contain genetic genealogy
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to be able to find relatives of this potential suspect
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in order to drill down and locate or provide
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a name for potential suspects that were involved
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in any related cases like this.
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JOEL SCHULTZE: So we took a portion of that extracted DNA
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from the electric blanket and sent it to an FGG company,
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Identifinders.
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NANCY GRACE: Identifinders International
00:18:05
is a company that specializes in forensic genetic genealogy,
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its leader, Dr. Colleen Fitzpatrick, a pioneer
00:18:14
in this emerging science.
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And they developed their DNA for profile,
00:18:20
which, again, is different than what we look for.
00:18:22
And the power of the FGG in that search is that they can go out
00:18:27
to third, fourth, fifth cousins twice removed as far
00:18:31
as relationships.
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And then the second part of that, then,
00:18:35
is once they get these searches and some names
00:18:37
back as doing the genetic genealogy portion,
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and they're building these family trees, where they're
00:18:42
finding a common ancestor--
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and typically, in the cases I've seen, it usually
00:18:47
goes back to the 1700s or so.
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I've seen it go back further.
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I've seen it stop in the 1800s.
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And once they find that common ancestor,
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they build a family tree back to the evidence
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and typically will come back with an investigative lead
00:19:00
of the one generation.
00:19:02
And then the investigation starts kind of all over again
00:19:05
for the Kent County Sheriff's Department.
00:19:08
NANCY GRACE: Genealogists at Identifinders
00:19:11
make a remarkable breakthrough, but now they
00:19:15
must combine their resources with Michigan
00:19:18
police to catch a killer.
00:19:21
JOHN TUINHOFF: They identified a distant relative family
00:19:25
that I started to investigate to try to get a DNA sample from one
00:19:30
of them so that we could get closer
00:19:32
to identifying our suspect.
00:19:33
I knew if I obtained a DNA sample
00:19:35
from someone in that family--
00:19:37
and they will get us a lot closer to our perpetrator
00:19:41
to help us to identify them.
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I made contact with a distant family member of our perpetrator
00:19:47
in Caro, Michigan.
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The family member was extremely cooperative with me.
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I explained to them the situation and what we were
00:19:57
investigating, and they voluntarily
00:19:59
provided me with a DNA sample.
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I resubmitted it to Identifinders International.
00:20:05
And at that time, they realized that they
00:20:10
were close to the suspect, but now they could get a lot closer.
00:20:15
And they came up with a target family for me.
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JOEL SCHULTZE: It was one of our first
00:20:19
that we did through the laboratory,
00:20:21
so I was hopeful and excited when they did come back
00:20:24
with a set of brothers that they said needed to be investigated.
00:20:28
And now it's up to the investigators
00:20:30
to investigate that family of brothers
00:20:33
and get a known from those brothers
00:20:36
so that we can compare it back to the evidence in the crime.
00:20:39
I can actually remember where I was when the phone
00:20:41
call came in from them.
00:20:43
I was actually at my daughter's basketball practice.
00:20:45
And I saw the phone number that was calling me,
00:20:48
and I knew it was probably good news.
00:20:50
And in fact, it was.
00:20:52
Genealogist Linda Doyle told me over the phone
00:20:54
that she had just forwarded me an email,
00:20:57
and she had identified a target from a family
00:21:01
that she believed was going to be my perpetrator.
00:21:03
Perpetrator was one of four biological male sons
00:21:07
of Wilfred and Donna Artman.
00:21:11
NANCY GRACE: Kent County sheriffs now closer
00:21:14
than ever to cracking this case, investigators
00:21:18
begin to focus on the backgrounds of all four
00:21:21
for brothers to isolate a likely suspect.
00:21:27
JOHN TUINHOFF: We knew the perpetrator was male,
00:21:29
so we had to go through and identify which
00:21:32
one of the brothers had ties to Grand Rapids
00:21:34
and look for anything in his background which would lead
00:21:37
us in the direction that he would
00:21:39
most likely be our perpetrator.
00:21:41
And one of the four brothers had an extensive criminal history
00:21:45
for sexual assault. And he, at one point, was a resident
00:21:50
of Grand Rapids in the '90s.
00:21:52
And when we did background investigations on these four
00:21:55
brothers, it became very apparent
00:21:57
right away that one of the brothers, Garry Artman,
00:22:00
was more likely the suspect that we needed to focus on.
00:22:05
BLAIR LACHMAN: So Garry was in the military for three years.
00:22:08
He was discharged for a sexual assault
00:22:11
while he was in the military.
00:22:12
While he was awaiting trial for that sexual assault,
00:22:16
he raped a 15 or 16-year-old girl
00:22:19
at knifepoint multiple times.
00:22:21
He was convicted of that rape and got
00:22:23
sentenced to 16 to 30 years.
00:22:25
He only did 11 of those years.
00:22:28
After he got out of prison, he moved to the Grand Rapids area,
00:22:32
which is where he resided during the time
00:22:34
that Shannon Hammack was found murdered.
00:22:36
There was another sexual assault
00:22:38
during his time in prison, and he was investigated
00:22:41
as a potential suspect.
00:22:42
And we read those reports, and they were pretty telling,
00:22:46
which included a statement made by him to one of the deputies
00:22:49
that the reason he was even in prison in the first place
00:22:52
is that he was leaving witnesses.
00:22:54
In other words, he didn't kill his victims.
00:22:57
JOHN TUINHOFF: When I saw Garry Artman's criminal history
00:23:01
and started reviewing some of the prior police reports
00:23:04
of the violence of his sexual assaults on these victims from
00:23:08
the early 1980s and late 1970s, sometimes you just know that
00:23:13
this is the guy we need to target,
00:23:14
and this guy matched everything for what
00:23:18
we are looking for for the murderer of Sharon Hammack.
00:23:21
BLAIR LACHMAN: He was a recluse.
00:23:23
He was an over-the-road truck driver.
00:23:24
He didn't have many close friends.
00:23:26
We talked to his brothers, talked to the victims
00:23:28
of the sexual assaults.
00:23:30
They all painted the same portrait--
00:23:31
a very dark, scary man who they were all afraid of,
00:23:36
uncomfortable with, capable of the heinous acts
00:23:40
that we're talking about.
00:23:41
That was a pretty consistent theme.
00:23:43
All those things raised our eyebrows to the point
00:23:47
where we knew we were really on the right path,
00:23:50
but it wasn't enough just to stop there.
00:23:52
We had to keep taking all the steps.
00:23:55
NANCY GRACE: Detectives are almost certain they've
00:23:58
got their serial killer, but they need concrete evidence
00:24:02
to make an arrest.
00:24:04
PAUL VAN RHEE: We continued to monitor where he lived
00:24:06
at the time, which was in Florida,
00:24:08
continued to learn who he was working for
00:24:11
and try to learn what his potential routines were.
00:24:15
And we also started to ping his cell phone.
00:24:19
We were able to get his cell phone information.
00:24:21
We were pinging his phone so we could track where
00:24:23
he was located at the time.
00:24:25
We had meetings with the Kent County Prosecutor's Office,
00:24:29
along with several detectives, and we decided
00:24:32
that based on the evidence that we had,
00:24:35
we had enough to get a warrant for his arrest,
00:24:37
based on the information that we had obtained.
00:24:40
NANCY GRACE: The net is now closing in on a prime suspect.
00:24:45
Name-- Garry Artman.
00:24:47
Is Artman the man who so cruelly dumped
00:24:51
Sharon's body on the side of the road like trash back in 1996?
00:24:56
We find out next on "Bloodline Detectives."
00:25:00
[AUDIO LOGO]
00:25:03
[AUDIO LOGO]
00:25:06
[SUSPENSEFUL MUSIC]
00:25:08
NANCY GRACE: Grand Rapids, Michigan, 2022,
00:25:11
police investigating the 1996 murder of a 29-year-old mother,
00:25:17
Sharon Hammack, her body found dumped on the side of the road.
00:25:21
There have been no solid leads for over 20 years, until now.
00:25:26
The science of investigative genetic genealogy
00:25:30
leads detectives to Garry Artman, a truck
00:25:34
driver prone to violence.
00:25:37
Now, they close in to make an arrest,
00:25:40
an arrest of a suspected serial killer.
00:25:43
Their plan is to arrest Artman during a traffic stop
00:25:48
as he drives through the state of Mississippi.
00:25:52
PAUL VAN RHEE: I was involved in tracking
00:25:54
Mr. Artman while he was moving towards the state
00:25:58
of Mississippi.
00:25:59
I had contact with the Mississippi State police,
00:26:02
and we were able to, based on his cell phone location data
00:26:07
and knowing that he was driving a certain type of truck,
00:26:10
they were able to locate him on the highway and make an arrest.
00:26:28
PAUL VAN RHEE: On September 22, 2022,
00:26:30
we conducted a traffic stop on the highway in Mississippi.
00:26:33
From that traffic stop, Mr. Hartman
00:26:35
was located as the driver of that semi truck.
00:26:38
And he was taken into custody at that time.
00:26:41
He was somewhat cooperative with investigators at that time
00:26:46
and officers on the scene.
00:26:48
And it was just surreal for me at that time
00:26:52
because there was always such a huge concern that we didn't know
00:26:56
if he would have the tendency to go out and continue
00:27:00
doing violent things to people.
00:27:02
So once he was in custody, that was
00:27:04
a relief to all of us investigators at the Kent
00:27:06
County Sheriff's Office.
00:27:08
Now we had to continue doing our job
00:27:09
so that he wouldn't be able to hurt anyone else.
00:27:12
BLAIR LACHMAN: He is arrested and taken
00:27:13
to the jail in Mississippi.
00:27:15
At the jail, he is read his rights,
00:27:18
and he waives his rights.
00:27:19
And he does an interview for about three hours
00:27:20
with the sheriff's department.
00:27:23
PAUL VAN RHEE: With any interview like this,
00:27:25
our goal, obviously, is to--
00:27:27
to hopefully get a confession.
00:27:29
Because it had been so long since the homicide took place,
00:27:33
we wanted to not only get a confession,
00:27:36
but first of all, confirm a lot of the things
00:27:39
that we had found in his background.
00:27:41
My intention was to start out in the past
00:27:45
and hopefully have him talk to me
00:27:47
about what his timeline in life was,
00:27:51
especially after he got out of prison.
00:27:53
And he was very open to talking about that.
00:27:56
BLAIR LACHMAN: He denied killing women,
00:27:58
openly admitted that he used prostitutes in Grand Rapids
00:28:02
frequently.
00:28:03
He acknowledged that he thought women,
00:28:05
in general, but particularly prostitutes, were beneath him.
00:28:08
They were just objects.
00:28:10
He actually used the word-- they're "pieces of meat."
00:28:28
JOHN TUINHOFF: The demeanor that I reviewed from watching
00:28:31
his interview and also from the traffic stop
00:28:33
was he didn't seem surprised that he
00:28:37
was arrested for a murder.
00:28:39
He was very calm, would answer questions.
00:28:43
To me, thinking, if you were being accused of a murder,
00:28:47
you would think that you would be
00:28:49
putting up a defense to the investigators saying,
00:28:53
I didn't do this.
00:28:54
But Garry Artman didn't really ever say that and just
00:28:59
acted like he didn't know what we were talking about.
00:29:19
PAUL VAN RHEE: He denied being part of what happened
00:29:23
to Sharon this whole time.
00:29:25
I brought it up several times.
00:29:28
I told him that we knew that he had murdered Sharon based
00:29:31
on the evidence that we had.
00:29:33
And he never really reacted to that.
00:29:37
We had previously gotten some information
00:29:39
from one of his recent coworkers, a female.
00:29:42
She had said that when he left his employer, he said,
00:29:47
it's a good thing that I'm leaving,
00:29:49
or something bad might have happened.
00:29:51
I brought that up to Garry Artman,
00:29:53
and he immediately reacted.
00:29:55
He became incredibly angry.
00:29:57
He was swearing at me.
00:29:59
I was very surprised by it because up to this point,
00:30:01
he hadn't had much of a reaction.
00:30:03
And I said, Garry, why are you so angry at me for saying that?
00:30:09
He said, well, because it's a lie.
00:30:12
And I said, Garry, I've called you a murderer to your face
00:30:15
this whole time, and you've never once reacted.
00:30:18
And he said, well, that's because I can't defend that.
00:30:22
It was the first time that he had had a significant reaction.
00:30:26
And it was the first time that I saw his short temper.
00:30:32
NANCY GRACE: During the interview,
00:30:33
detectives roll the dice on a very crucial piece of evidence.
00:30:38
They take a DNA swab from Garry Artman.
00:30:41
Why?
00:30:42
To confirm, without a doubt, it's
00:30:45
his DNA on that blanket in which Sharon Hammond
00:30:50
was found wrapped back in 1996.
00:30:56
PAUL VAN RHEE: During that interview,
00:30:57
we did take a moment to take a DNA sample from him,
00:31:00
and we immediately had that shipped
00:31:01
back to Michigan for comparison with the MSP labs.
00:31:04
JOEL SCHULTZE: They flew the buccal swab to us.
00:31:07
And that's kind of a pretty straightforward test.
00:31:10
And I think we turned that around
00:31:12
in six hours with a report out in, like,
00:31:14
a total of eight hours.
00:31:17
NANCY GRACE: The buccal swab is a match.
00:31:19
After all this time, police can finally inform Sharon Hammack's
00:31:24
family the man who caused so much pain for 25 years-plus
00:31:31
has been caught.
00:31:34
We thought that they just gave up.
00:31:36
And after my mom died, we never heard anything from anybody.
00:31:40
And then one day, a detective knocked at my sister Terri's
00:31:44
door and said, we can't wait to tell you this,
00:31:47
but we've solved your sister's murder.
00:31:50
I looked up at my mother, and I said,
00:31:52
we finally got justice, Mama.
00:31:54
[CRYING] We're gonna get justice for her.
00:31:58
And I'm sorry you're not here, but you're gonna be
00:32:01
up there celebrating with her.
00:32:05
NANCY GRACE: The DNA match is fantastic evidence,
00:32:08
but investigators plan to leave no stone unturned.
00:32:13
Before taking Garry Artman to trial,
00:32:16
the Kent County sheriffs and the district attorneys
00:32:19
get a search warrant for Artman properties.
00:32:23
We see what explosive evidence they find there
00:32:27
next on "Bloodline Detectives."
00:32:30
[AUDIO LOGO]
00:32:34
[AUDIO LOGO]
00:32:38
NANCY GRACE: 2022, White Springs, Florida,
00:32:41
detectives have Garry Artman in custody for the 1996
00:32:46
murder of a young mom, Sharon Hammack,
00:32:49
in Grand Rapids, Michigan.
00:32:51
Artman, a truck driver, is arrested at a traffic
00:32:55
stop in Mississippi.
00:32:57
Now, investigators want to search Artman's storage unit.
00:33:02
PAUL VAN RHEE: Part of the information that we received
00:33:04
during the interview was the fact that he had a storage
00:33:07
unit where he lived in Florida.
00:33:10
Based off that information, we were able to obtain a search
00:33:12
warrant for that storage unit in Florida
00:33:15
and conducted a search there.
00:33:17
During that search, we located several journals
00:33:20
that appeared to be writing from Garry Artman.
00:33:23
We located several different bibles
00:33:26
with scriptures highlighted and other writing within the bibles
00:33:31
as well.
00:33:32
We located women's panties and women's
00:33:36
bras that were put in a bag that was in the storage unit as well.
00:33:41
And all these items were taken back
00:33:43
to Michigan for further review.
00:33:45
He was a man that kept journals.
00:33:48
He wrote down all of his feelings, quotes.
00:33:52
He basically told us about his hatred for women.
00:33:56
Any woman in high school that turned him down,
00:33:59
it stemmed this hatred and anger.
00:34:02
And he thought, if they're not going to give me what I want,
00:34:06
I'm going to take it from other women.
00:34:07
And that's what he started doing.
00:34:10
PAUL VAN RHEE: He had many writings about women,
00:34:13
specifically prostitutes.
00:34:15
A lot of his writings, he referred to these
00:34:18
prostitutes as "slaves."
00:34:19
He referred to his work as being told by God to--
00:34:25
that it was his work to do whatever he was writing about.
00:34:29
ELIZABETH BARTLETT: He talked about murdering
00:34:31
women out of morality.
00:34:33
It was, like, his right to do.
00:34:35
He mentioned raping 152 girls and showed no remorse for that.
00:34:42
Given his meticulous notes and the things that he collected
00:34:46
and kept, I believed that there are at least
00:34:49
152 women that he raped.
00:34:53
NANCY GRACE: Equipped with strong evidence,
00:34:56
Kent County District Attorneys now ready to face
00:34:59
Garry Artman in court.
00:35:03
ELIZABETH BARTLETT: My goal for this trial
00:35:06
was to tell Sharon Hammack's story without her being here,
00:35:10
really focusing on her as a person, and the brutal way
00:35:17
that he treated her, and just painting
00:35:19
that picture for the jury.
00:35:21
They were filled with heartbreak and compassion for Sharon.
00:35:27
They did not judge her in any way.
00:35:29
Some of the quotes that were read from Garry Artman's journal
00:35:33
in court, their faces changed to hatred and disbelief
00:35:38
that there is somebody out there that is so monstrous.
00:35:43
BLAIR LACHMAN: He showed zero signs of remorse.
00:35:45
He did engage, and not in a good way.
00:35:48
He would act up, say some funky things
00:35:50
during the course of trial.
00:35:51
Like, he commented on his knots and how good they were.
00:35:54
And we put the part about him saying,
00:35:56
women are just a piece of meat.
00:35:58
He openly acknowledged they are in the courtroom.
00:36:02
The sense we got was the jury was disgusted by him.
00:36:05
I think they were.
00:36:07
It wasn't just that he killed and raped her.
00:36:09
I think the volume of rapes--
00:36:12
I mean, he admitted to 150 rapes in his letters.
00:36:15
He explained some of his rationale
00:36:16
in some of his journals.
00:36:18
And I think they were disgusted by him.
00:36:20
I think it was hard not to be.
00:36:22
NANCY GRACE: It doesn't take the jury long to decide the rest
00:36:26
of Garry Artman's future.
00:36:29
JOHN TUINHOFF: Sometimes this can take a while.
00:36:31
Some murder cases, it could take, you know, two days.
00:36:34
The prosecutors and the detectives,
00:36:37
we decided that we were just gonna walk down the street
00:36:39
to grab something to eat.
00:36:41
But while we were ordering our food,
00:36:44
we got a call from the court saying the jury
00:36:46
had already reached a verdict.
00:36:48
The only time I think I get a little bit nervous
00:36:50
is when the jury is coming back in after they have a verdict.
00:36:52
And there's that unknown moment where you don't know
00:36:56
what they're gonna say or do.
00:36:58
But it was a 30-minute verdict, so we felt pretty comfortable.
00:37:03
When you have a 30-minute verdict, it's usually
00:37:04
favorable to the prosecution.
00:37:07
NANCY GRACE: The jury finds Garry
00:37:08
Artman guilty on three counts--
00:37:11
open murder, felony murder, and first-degree criminal sex
00:37:16
conduct.
00:37:17
And he is sentenced to life behind bars.
00:37:23
PAUL VAN RHEE: Even though he made
00:37:25
it that long without getting caught, I'm glad for the family
00:37:28
that they were able to get their closure with this trial.
00:37:32
TINA DE YOUNG: Is there still heartache?
00:37:33
Yes.
00:37:34
There will always be heartache.
00:37:36
I prayed to God that he would give me the answer.
00:37:39
That's all I ever wanted for her, was justice.
00:37:42
She deserved that.
00:37:44
That monster can't hurt nobody else.
00:37:47
BLAIR LACHMAN: I'm confident that Garry Artman
00:37:50
thought no one would care.
00:37:51
Because she was a prostitute, I don't think he thought anybody
00:37:54
would care a year later.
00:37:56
I didn't think he thought anybody would care five years
00:37:58
later, and I definitely don't think he thought anybody
00:38:00
would care 27 years later.
00:38:02
PAUL VAN RHEE: No matter what that person
00:38:04
does in their lifestyle, we treat all of these scenes
00:38:07
and all of the homicides the same,
00:38:09
no matter what the background of the individual is.
00:38:14
NANCY GRACE: Without the incredible work
00:38:16
of the "Bloodline Detectives" and the science
00:38:18
of investigative genetic genealogy, this case
00:38:22
would never have been solved.
00:38:26
Boy, we've come a long way since 1996, between cell phones,
00:38:30
technology, DNA, familial DNA.
00:38:34
There's just so much more we can do in solving crimes and giving
00:38:38
people their justice today.
00:38:40
ELIZABETH BARTLETT: Forensic genetic genealogy
00:38:42
is such a wonderful tool now, looking
00:38:44
back on these cold cases.
00:38:46
It changes the game.
00:38:48
Cases that would otherwise go unsolved forever
00:38:52
now have a chance.
00:38:55
PAUL VAN RHEE: I think the highlight of this case
00:38:57
was just seeing how this genetic genealogy
00:39:00
can work with these cold cases.
00:39:02
And it gives me hope that there's
00:39:04
additional cases that can be solved in the same manner.
00:39:08
NANCY GRACE: Now, Sharon's family
00:39:10
can finally close this awful chapter of their lives.
00:39:15
I loved the way we hugged each other.
00:39:18
And we always told each other we loved each other.
00:39:20
And my last conversation with her, it wasn't very nice.
00:39:26
And we didn't end the conversation with "I love you."
00:39:29
And that-- [SIGHS, SNIFFLES] I know
00:39:33
she knows I loved her and just as much
00:39:36
as I know that she loved me.
00:39:38
She's a beautiful person that went down the wrong path.
00:39:43
And I wish she wouldn't have because she was beautiful--
00:39:47
her smile, her soul, everything.
00:39:49
She was a beautiful person, and she
00:39:51
did not deserve to have her life ended at such a young age.
00:39:57
PAUL VAN RHEE: At the time, we had over a dozen
00:39:59
similar incidents in the Grand Rapids
00:40:02
area during the late 1990s.
00:40:04
And if I was able to interview him again,
00:40:07
the most important thing I would want to know
00:40:09
is what other homicides out there was he a part of.
00:40:14
The incredible work of the "Bloodline Detectives"
00:40:17
goes well beyond the tragic murder of Sharon Hammack.
00:40:22
Between 1993 and 1996, 17 women, many of whom were sex workers,
00:40:30
disappeared in the Grand Rapids area.
00:40:33
Some of them were never even found.
00:40:37
11 of them, including Sharon Hammack, were murdered.
00:40:42
On his deathbed, 2024, Garry Artman
00:40:47
confessed to 10 of those murders,
00:40:50
plus the murder of a Florida woman back in 2012.
00:40:57
I'm Nancy Grace, and I want to thank you for joining us
00:41:00
here on "Bloodline Detectives."
00:41:03
[AUDIO LOGO]
00:41:07
[AUDIO LOGO]
00:41:10
[THEME MUSIC]

Badges

This episode stands out for the following:

  • 85
    Most heartbreaking
  • 80
    Most emotional
  • 80
    Most intense
  • 75
    Most dramatic

Episode Highlights

  • The Discovery of Sharon Hammack
    In 1996, two men discover a body wrapped in a blanket on the roadside, identified as Sharon Hammack.
    “It was immediately apparent to them that this was a body.”
    @ 00m 29s
    April 27, 2025
  • A Community Gripped by Fear
    The murder of Sharon Hammack is part of a series of killings in Grand Rapids, raising fears of a serial killer.
    “Fear grips the community.”
    @ 00m 33s
    April 27, 2025
  • The Tragic Autopsy Findings
    During the autopsy, it is revealed that Sharon Hammack was pregnant when she was murdered.
    “A tragic blow in this case comes during the examination.”
    @ 10m 34s
    April 27, 2025
  • Garry Artman's Arrest
    Detectives close in on Garry Artman, a suspected serial killer, during a traffic stop.
    “The net is now closing in on a prime suspect.”
    @ 24m 40s
    April 27, 2025
  • DNA Evidence Confirms Guilt
    A DNA match from a swab taken during an interview links Artman to the crime.
    “The buccal swab is a match.”
    @ 31m 19s
    April 27, 2025
  • Trial Verdict
    The jury finds Garry Artman guilty of multiple charges, sentencing him to life in prison.
    “The jury finds Garry Artman guilty on three counts.”
    @ 37m 08s
    April 27, 2025

Episode Quotes

  • Sharon was fighting until her last breath.
    The Murder of Sharon Hammack | Bloodline Detectives with Nancy Grace
  • I just wanted answers.
    The Murder of Sharon Hammack | Bloodline Detectives with Nancy Grace
  • We finally got justice, Mama.
    The Murder of Sharon Hammack | Bloodline Detectives with Nancy Grace
  • She was a beautiful person that went down the wrong path.
    The Murder of Sharon Hammack | Bloodline Detectives with Nancy Grace

Key Moments

  • Body Found00:29
  • Community Fear00:33
  • Autopsy Reveals Tragedy10:34
  • DNA Match31:19
  • Justice Served31:52
  • Guilty Verdict37:08

Words per Minute Over Time

Vibes Breakdown

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Who Murdered Roxanne Wood? | Bloodline Detectives with Nancy Grace
May 08, 2023
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42:16
Who Murdered Roxanne Wood? | Bloodline Detectives with Nancy Grace
The Santee Strangler | Bloodline Detectives with Nancy Grace
May 24, 2023
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41:45
The Santee Strangler | Bloodline Detectives with Nancy Grace
Bloodline Detectives - Episode 16 - A Life Stolen
April 01, 2021
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41:57
Bloodline Detectives - Episode 16 - A Life Stolen
Okaloosa Jane Doe | Bloodline Detectives with Nancy Grace
June 13, 2025
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41:46
Okaloosa Jane Doe | Bloodline Detectives with Nancy Grace
Bloodline Detectives - Episode 14 - The Clearfield Rapist
April 01, 2021
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41:59
Bloodline Detectives - Episode 14 - The Clearfield Rapist
1987 Double Homicide Finally Solved | Bloodline Detectives with Nancy Grace
August 01, 2024
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41:46
1987 Double Homicide Finally Solved | Bloodline Detectives with Nancy Grace
Bloodline Detectives - Episode 13 - Llandarcy Serial Killer
April 01, 2021
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41:58
Bloodline Detectives - Episode 13 - Llandarcy Serial Killer
Bloodline Detectives - Season 2, Episode 16 - A Family Torn Apart - Full Episode
June 01, 2022
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41:49
Bloodline Detectives - Season 2, Episode 16 - A Family Torn Apart - Full Episode
Bloodline Detectives - Episode 12 - Carnage in Cardiff
April 01, 2021
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41:59
Bloodline Detectives - Episode 12 - Carnage in Cardiff
DNA Unmasks Predator! | Bloodline Detectives with Nancy Grace
April 27, 2025
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41:47
DNA Unmasks Predator! | Bloodline Detectives with Nancy Grace
The Murder of Robin Brooks | Bloodline Detectives with Nancy Grace
June 16, 2024
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41:46
The Murder of Robin Brooks | Bloodline Detectives with Nancy Grace