
This episode covers the unsolved murders of two Swedish women, the mysterious disappearance of businessman Gary Simmons, and updates on Amelia Earhart's case.
The segment on the Swedish women details their hitchhiking trip in California in 1983, leading to their tragic murders. Their bodies were discovered in Santa Barbara County, and an anonymous tip in 1991 reignited the investigation.
Gary Simmons vanished in 1974 after a horse deal, and his remains were found in a cave nearly two decades later. The investigation points to foul play, with a suspect named Tom Dixon who disappeared shortly after Simmons.
Amelia Earhart's disappearance is revisited, highlighting claims by aviation archaeologist Richard Gillespie that he has solved the mystery. However, his findings are contested by experts, leaving Earhart's fate unresolved.
Lastly, the episode features the story of Joe Saul, who discovered he was adopted and learned about the illegal baby broker Bessie Barnard, who sold children, including him.
The episode investigates the murders of two Swedish women, Gary Simmons' disappearance, and updates on Amelia Earhart's fate.

This episode stands out for the following:
For every mystery, there is someone who knows the truth. Perhaps it's you.Unsolved Mysteries with Robert Stack - Season 4, Episode 21 - Full Episode
It's very, very dangerous to hitchhike.Unsolved Mysteries with Robert Stack - Season 4, Episode 21 - Full Episode
I felt like a piece of property.Unsolved Mysteries with Robert Stack - Season 4, Episode 21 - Full Episode
I just thought I was going crazy.Unsolved Mysteries with Robert Stack - Season 4, Episode 21 - Full Episode
It was just shot. I just couldn’t believe what I was seeing.Unsolved Mysteries with Robert Stack - Season 4, Episode 21 - Full Episode
It was a turning point.Unsolved Mysteries with Robert Stack - Season 4, Episode 21 - Full Episode