
This episode of Unsolved Mysteries covers the murders of two women named Mary Morris, a fraudulent car manufacturer named Liz Carmichael, a grocery store robbery in South Carolina, and a series of church arsons in Florida.
The first segment focuses on the mysterious deaths of two women named Mary Morris in Houston, Texas, occurring just three days apart. The first victim, Mary Lou Morris, was found in a burned car, while the second, Mary McGinness Morris, was brutally murdered shortly after expressing fear of a coworker. Investigators explore connections between the two cases, but the police ultimately conclude they are unrelated.
The episode then shifts to Liz Carmichael, who claimed to have invented a revolutionary three-wheel car that could achieve 60 miles per gallon. Despite raising over $3 million in pre-sales, authorities discover that Carmichael's company had no manufacturing capabilities and was a scam. After fleeing, she was later arrested and revealed to have been living under a false identity.
Next, the episode recounts a grocery store robbery in Greenville, South Carolina, where a police officer was killed. The mastermind, Sam Waty, attempted to frame his own son for the murder but was ultimately convicted himself. Waty later escaped from prison but was recaptured.
Finally, the episode discusses a series of church arsons in Florida, where nearly 30 churches were set on fire over 16 months. Authorities suspect a serial arsonist, and a man named Patrick Lee Frank is later charged but found not guilty by reason of insanity.
Two women named Mary Morris are murdered in Houston, Liz Carmichael commits fraud with a fake car company, and a series of church arsons occur in Florida.

This episode stands out for the following:
She was just a really good person.Unsolved Mysteries with Dennis Farina - Season 3, Episode 18
Astronomical odds the two Marys were killed 3 days apart.Unsolved Mysteries with Dennis Farina - Season 3, Episode 18
I never thought that Liz was a man.Unsolved Mysteries with Dennis Farina - Season 3, Episode 18
Life is nothing, I'm going to get out.Unsolved Mysteries with Dennis Farina - Season 3, Episode 18
Bill helped us out when he saw the rain coming.Unsolved Mysteries with Dennis Farina - Season 3, Episode 18
The love of the thing maybe got the better of his soul.Unsolved Mysteries with Dennis Farina - Season 3, Episode 18