4 - 1The Loch Ness Monster Jan. 30, 2023
4 - 2Who is the Zodiac Killer? Feb. 06, 2023
4 - 3The Assassination of JFK Feb. 13, 2023
4 - 4The Lost Colony of Roanoke Feb. 20, 2023
4 - 5The Phoenix Lights Phenomenon Feb. 27, 2023
4 - 6The Ark of the Covenant Mar. 05, 2023
4 - 7The "Missingest" Man in America Mar. 12, 2023
4 - 8Blackbeard's Lost Treasure Mar. 19, 2023
4 - 9Decoding the Mysterious Antikythera Mechanism Mar. 26, 2023
4 - 10The Puzzling Pyramids of Egypt Apr. 16, 2023
4 - 11The Hunt for Stolen Nazi Treasure Apr. 23, 2023
4 - 12The Deadly Bermuda Triangle Apr. 30, 2023
4 - 13The Search for Noah's Ark May. 07, 2023
4 - 14Who is D.B. Cooper? May. 14, 2023
4 - 15The Legend of Bigfoot May. 21, 2023
4 - 16Unlocking the Secrets of Stonehenge May. 28, 2023
4 - 17The Search for El Dorado Jun. 04, 2023
4 - 18The Mysterious Havana Syndrome Jun. 10, 2023
4 - 19Unlocking the Secrets of the Nazca Lines Jun. 24, 2023
4 - 20The Hunt for Cleopatra's Missing Tomb Jul. 09, 2023
4 - 21TWA Flight 800 Jul. 16, 2023
4 - 22The Hunt for Hitler Jul. 23, 2023
4 - 23The Lost Gold of WWII Jul. 30, 2023
4 - 24The Black Dahlia Aug. 06, 2023
4 - 25Gardner Museum Robbery Aug. 13, 2023