| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | The Loch Ness Monster |
January 30, 2023
History
|
42 | |
| S04E02 | Who is the Zodiac Killer? |
February 6, 2023
History
|
42 | |
| S04E03 | The Assassination of JFK |
February 13, 2023
History
|
42 | |
| S04E04 | The Lost Colony of Roanoke |
February 20, 2023
History
|
42 | |
| S04E05 | The Phoenix Lights Phenomenon |
February 27, 2023
History
|
40 | |
| S04E06 | The Ark of the Covenant |
March 6, 2023
History
|
42 | |
| S04E07 | The "Missingest" Man in America |
March 13, 2023
History
|
42 | |
| S04E08 | Blackbeard's Lost Treasure |
March 20, 2023
History
|
42 | |
| S04E09 | Decoding the Mysterious Antikythera Mechanism |
March 27, 2023
History
|
42 | |
| S04E10 | The Puzzling Pyramids of Egypt |
April 17, 2023
History
|
42 | |
| S04E11 | The Hunt for Stolen Nazi Treasure |
April 24, 2023
History
|
42 | |
| S04E12 | The Deadly Bermuda Triangle |
May 1, 2023
History
|
42 | |
| S04E13 | The Search for Noah's Ark |
May 8, 2023
History
|
42 | |
| S04E14 | Who is D.B. Cooper? |
May 15, 2023
History
|
42 | |
| S04E15 | The Legend of Bigfoot |
May 22, 2023
History
|
42 | |
| S04E16 | Unlocking the Secrets of Stone Henge |
May 29, 2023
History
|
42 | |
| S04E17 | The Search for El Dorado |
June 5, 2023
History
|
42 | |
| S04E18 | Havana Syndrome |
June 12, 2023
History
|
42 | |
| S04E19 | Unlocking the Secrets of the Nazca Lines |
June 26, 2023
History
|
42 | |
| S04E20 | The Hunt for Cleopatra's Missing Tomb |
July 10, 2023
History
|
42 | |
| S04E21 | TWA Flight 800 |
July 17, 2023
History
|
42 | |
| S04E22 | The Hunt for Hitler |
July 24, 2023
History
|
42 | |
| S04E23 | The Lost Gold of WWII |
July 31, 2023
History
|
42 | |
| S04E24 | The Black Dahlia |
August 7, 2023
History
|
42 | |
| S04E25 |
Gardner Museum Robbery
season finale
|
August 14, 2023
History
|
42 |
No artwork of this type.
No artwork of this type.