
This episode of Unsolved Mysteries covers the tragic case of Christy Martin, sleepwalking incidents involving Jared Allgood and Heidi Ruiz, and the disappearance of Susan Harrison.
Christy Martin, a 19-year-old honor roll student, was murdered in a drive-by shooting in Houston, Texas, on December 22, 1995. Christy and her friends were attacked by gang members, leading to her death from a semi-automatic rifle. Her parents, Brian and Judy Martin, express their grief and frustration over the senseless violence.
The episode also discusses sleepwalking through the stories of Jared Allgood, a college football player who died while sleepwalking, and Heidi Ruiz, an athlete whose sleepwalking episodes were triggered by stress. Experts explain the dangers and complexities of sleepwalking, emphasizing the need for medical consultation.
Lastly, the episode highlights the unresolved case of Susan Harrison, who vanished in 1994 after a tumultuous relationship with her husband, Jim Harrison. Her sons believe Jim knows more about her disappearance, especially after her car was found abandoned at an airport.
Throughout the episode, viewers are encouraged to provide any information that could assist in solving these mysteries.
The episode covers Christy Martin's murder, sleepwalking cases, and Susan Harrison's disappearance, highlighting unresolved mysteries and family tragedies.

This episode stands out for the following:
It’s really a sad time, and I know Christmas should be a happy time.Unsolved Mysteries with Robert Stack - Season 9, Episode 4 - Full Episode
Oh my god, you know she didn’t die, she’s alive!Unsolved Mysteries with Robert Stack - Season 9, Episode 4 - Full Episode
I’d love Susan and I really do pray to God that she’s alive and well.Unsolved Mysteries with Robert Stack - Season 9, Episode 4 - Full Episode
I have dreams of walking down the street with her... I miss her so much.Unsolved Mysteries with Robert Stack - Season 9, Episode 4 - Full Episode