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| Aflevering | Eerste uitzending |
|---|---|
| S15E01 - The Mystery of Nan Madol | 25/01/2020 |
| S15E02 - The Relics of Roswell | 01/02/2020 |
| S15E03 - Destination Chile | 08/02/2020 |
| S15E04 - The Real Men in Black | 15/02/2020 |
| S15E05 - The Mystery of the Stone Giants | 22/02/2020 |
| S15E06 - The World Before Time | 29/02/2020 |
| S15E07 - They Came from The Pleiades | 07/03/2020 |
| S15E08 - The Immortality Machine | 14/03/2020 |
| S15E09 - The Shapeshifters | 21/03/2020 |
| S15E10 - The Mystery of Skinwalker Ranch | 28/03/2020 |
| S15E11 - The Ultimate Guide to UFOs | 11/04/2020 |
| S15E12 - Aliens and the Presidents | 18/04/2020 |