History's Greatest Mysteries — Season 4

Episodes

• E1 The Loch Ness Monster2023-01-307.5
• E2 Who is the Zodiac Killer?2023-02-068.0
• E3 The Assassination of JFK2023-02-138.0
• E4 The Lost Colony of Roanoke2023-02-207.0
• E5 The Phoenix Lights Phenomenon2023-02-277.5
• E6 The Ark of the Covenant2023-03-056.0
• E7 The "Missingest" Man in America2023-03-125.5
• E8 Blackbeard's Lost Treasure2023-03-197.0
• E9 Decoding the Mysterious Antikythera Mechanism2023-03-266.5
• E10 The Puzzling Pyramids of Egypt2023-04-165.5
• E11 The Hunt for Stolen Nazi Treasure2023-04-238.0
• E12 The Deadly Bermuda Triangle2023-04-307.5
• E13 The Search for Noah's Ark2023-05-076.5
• E14 Who is D.B. Cooper?2023-05-146.5
• E15 The Legend of Bigfoot2023-05-217.0
• E16 Unlocking the Secrets of Stonehenge2023-05-287.0
• E17 The Search for El Dorado2023-06-046.5
• E18 The Mysterious Havana Syndrome2023-06-105.5
• E19 Unlocking the Secrets of the Nazca Lines2023-06-247.0
• E20 The Hunt for Cleopatra's Missing Tomb2023-07-097.0
• E21 TWA Flight 8002023-07-167.5
• E22 The Hunt for Hitler2023-07-236.5
• E23 The Lost Gold of WWII2023-07-306.5
• E24 The Black Dahlia2023-08-067.5
• E25 Gardner Museum Robbery2023-08-136.0