| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | World's Strangest Ghost Towns |
April 4, 2019
Science Channel
|
90 | |
| S04E02 | Secret of Supervillain Island |
April 11, 2019
Science Channel
|
42 | |
| S04E03 | Escobar's Castle |
April 18, 2019
Science Channel
|
42 | |
| S04E04 | Labyrinth of the Dead |
April 25, 2019
Science Channel
|
42 | |
| S04E05 | Treasure of Outlaw Valley |
May 2, 2019
Science Channel
|
42 | |
| S04E06 | Alaska's Fort Apocalypse |
May 9, 2019
Science Channel
|
42 | |
| S04E07 | Alien Hell Portal |
May 16, 2019
Science Channel
|
42 | |
| S04E08 | Pompeii's Gate to Hell |
May 23, 2019
Science Channel
|
42 | |
| S04E09 |
Haunting on Plague Island
season finale
|
May 30, 2019
Science Channel
|
42 |
No artwork of this type.
No artwork of this type.