
This episode of Unsolved Mysteries covers four intriguing cases: the mysterious gelatinous substance that fell from the sky in Oakville, Washington; the disappearance of journalist Lisa Bishop on a voyage to Haiti; the controversial death of John Wilkes Booth; and the shocking murder of Dorothy Johnson's mother by a hitchhiker.
The first case discusses the bizarre phenomenon in Oakville, Washington, where a gelatinous goo rained down, causing illness among residents. Officer David Lacy and local resident Donnie Hearn describe their experiences with the substance, which was later found to contain human white blood cells and bacteria.
Next, the episode highlights the disappearance of Lisa Bishop, a 23-year-old journalist who vanished while sailing to Haiti. Her family and boyfriend, Paul Cornwell, express their concerns about her decision to sail with a German captain named Florian Meerbourch. The ship, Freedon, was reported missing, and various theories about its fate are discussed.
The episode then shifts to the historical mystery surrounding John Wilkes Booth, the man who assassinated President Abraham Lincoln. Experts suggest that Booth may have escaped death and lived until 1903, citing discrepancies in eyewitness accounts and evidence from the time.
Finally, the episode recounts the tragic story of Dorothy Johnson, who was murdered by a hitchhiker after a chance encounter. Her son, Charles Holden, becomes a suspect until evidence clears him, leading to the eventual arrest of Gilbert Cannon for the crime.
Four cases: mysterious goo in Oakville, Lisa Bishop's disappearance, John Wilkes Booth's fate, and a hitchhiker's murder of Dorothy Johnson.

This episode stands out for the following:
This isn’t right, I mean we’re out in the middle of nowhere.Unsolved Mysteries with Dennis Farina - Season 5, Episode 20
I could feel something was wrong, mother’s intuition I guess you could call it.Unsolved Mysteries with Dennis Farina - Season 5, Episode 20
I feel that if Florian is out there, eventually I’ll find out about it.Unsolved Mysteries with Dennis Farina - Season 5, Episode 20
The government knew that man was not Booth.Unsolved Mysteries with Dennis Farina - Season 5, Episode 20
I didn’t think I’d ever find anyone.Unsolved Mysteries with Dennis Farina - Season 5, Episode 20
It’s just like you’re in some kind of a dream.Unsolved Mysteries with Dennis Farina - Season 5, Episode 20