1. They Disappeared
Avsnitt 1 - They Disappeared, Säsong 1
New theories shed light on the world's biggest mysteries, including the unsolved disappearances of aviator Amelia Earhart and hijacker DB Cooper.
2. Cover-Ups
Avsnitt 2 - Cover-Ups, Säsong 1
What's going on in Area 51? What crashed at Roswell? And what's happening at the top-secret Dugway Proving Ground? Experts go in search of answers.
3. Paranormal Destinations
Avsnitt 3 - Paranormal Destinations, Säsong 1
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4. Strange Triangles
Avsnitt 4 - Strange Triangles, Säsong 1
Three places, three spooky stories. Experts examine weird sightings and unsolved disappearances at Bennington, Bermuda and Bridgewater triangles.
5. Unidentified
Avsnitt 5 - Unidentified, Säsong 1
An investigation into the Mantell UFO, with new scientific evidence behind the UFO encounter in Levelland, Texas.
6. Close Encounters
Avsnitt 6 - Close Encounters, Säsong 1
Experts investigate if Betty and Barney Hill were really abducted by aliens, explore the mystery of the Mothman, and Travis Walton's five-day disappearance.
7. Strange Crime
Avsnitt 7 - Strange Crime, Säsong 1
The team dissect a theory that tries to explain what happened to Charles Lindbergh's son, and the possibility that Hollywood's biggest mystery has been solved.
8. Mass UFO Sightings
Avsnitt 8 - Mass UFO Sightings, Säsong 1
A look at how having multiple witnesses to a crime can complicate the story, as many have their own accounts of what occurred.
9. Hidden Treasure
Avsnitt 9 - Hidden Treasure, Säsong 1
The hunt is on for the Civil War Gold and for $1.5million taken in 1962's Plymouth Mail robbery. Plus, treasure seekers search for the Lost Dutchman mine.
10. Gone Missing
Avsnitt 10 - Gone Missing, Säsong 1
The biggest mysteries that surround some of the biggest families in America, including the disappearance of Jimmy Hoffa.
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