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| Aflevering | Eerste uitzending |
|---|---|
| S21E01 - The Top Ten Extraordinary Discoveries | 07/02/2025 |
| S21E02 - The Top Ten Mysterious Monoliths | 14/02/2025 |
| S21E03 - The Top Ten UFO Crashes | 21/02/2025 |
| S21E04 - The Top Ten Unexplained Technologies | 28/02/2025 |
| S21E05 - The Top Ten Secret Projects | 07/03/2025 |
| S21E06 - The Top Ten Mysterious Mountains | 14/03/2025 |
| S21E07 - Mysteries of the Aztecs | 21/03/2025 |
| S21E08 - The Glowing Orb Phenomenon | 28/03/2025 |
| S21E09 - The Legacy of J. Allen Hynek | 29/08/2025 |
| S21E10 - The Volcano Factor | 05/09/2025 |
| S21E11 - The Birdman Mystery | 12/09/2025 |
| S21E12 - The Abduction Files | 19/09/2025 |