| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Mysterious Ancient Ruins |
April 1, 2022
History
|
42 | |
| S04E02 | The Mystery of Genius |
April 1, 2022
History
|
42 | |
| S04E03 | What Lies Below? |
April 8, 2022
History
|
42 | |
| S04E04 | Secrets of Abandoned Places |
April 15, 2022
History
|
42 | |
| S04E05 | Acts of God |
April 22, 2022
History
|
42 | |
| S04E06 | Serial Killer Creatures |
May 6, 2022
History
|
42 | |
| S04E07 | Mysterious Tombs |
May 13, 2022
History
|
42 | |
| S04E08 | Uncanny Curses |
May 20, 2022
History
|
42 | |
| S04E09 | Superhuman Feats |
May 27, 2022
History
|
42 | |
| S04E10 | Mysteries of the Missing Link |
June 3, 2022
History
|
42 | |
| S04E11 | Surviving the Impossible |
June 10, 2022
History
|
42 | |
| S04E12 | The Search for King Arthur |
June 24, 2022
History
|
42 | |
| S04E13 | Wonders of the Ancient World |
October 7, 2022
History
|
42 | |
| S04E14 | The Hunt For Jack The Ripper |
October 14, 2022
History
|
42 | |
| S04E15 | The Search for Extraterrestrial Life |
October 21, 2022
History
|
42 | |
| S04E16 | Real Life Monsters |
October 28, 2022
History
|
42 | |
| S04E17 | America's Lost Treasures |
November 4, 2022
History
|
42 | |
| S04E18 | The Bermuda Triangle and the Beyond |
November 18, 2022
History
|
42 | |
| S04E19 | Secrets of the Founding Fathers |
November 25, 2022
History
|
42 | |
| S04E20 | The Weird Wild West |
December 2, 2022
History
|
42 | |
| S04E21 | Devastating Disasters |
December 9, 2022
History
|
42 | |
| S04E22 |
Mysterious Monoliths
season finale
|
December 16, 2022
History
|
42 |
No artwork of this type.
No artwork of this type.