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History's Greatest Mysteries Season 4 Episodes Guide and Summaries

EpisodeEpisode NameAir Date
1The Loch Ness Monster
2Who is the Zodiac Killer?
3The Assassination of JFK
4The Lost Colony of Roanoke
5The Phoenix Lights Phenomenon
6The Ark of the Covenant
7The "Missingest" Man in America
8Blackbeard's Lost Treasure
9Decoding the Mysterious Antikythera Mechanism
10The Puzzling Pyramids of Egypt
11The Hunt for Stolen Nazi Treasure
12The Deadly Bermuda Triangle
13The Search For Noah's Ark
14Who Is D.B. Cooper?
15The Legend of Bigfoot
16Unlocking the Secrets of Stonehedge
17The Search for El Dorado
18The Mysterious Havana Syndrome
19Unlocking the Secrets of the Nazca Lines
20The Hunt for Cleopatra's Missing Tomb
21TWA Flight 800
22The Hunt for Hitler
23The Lost Gold of WWII
24The Black Dahlia
25Gardner Museum Robbery