| S21E01 |
The Top Ten Extraordinary Discoveries |
42 min |
| S21E02 |
The Top Ten Mysterious Monoliths |
42 min |
| S21E03 |
The Top Ten UFO Crashes |
42 min |
| S21E04 |
The Top Ten Unexplained Technologies |
42 min |
| S21E05 |
The Top Ten Secret Projects |
42 min |
| S21E06 |
The Top Ten Mysterious Mountains |
42 min |
| S21E07 |
Mysteries of the Aztecs |
42 min |
| S21E08 |
The Glowing Orb Phenomenon |
42 min |
| S21E09 |
The Legacy of J. Allen Hynek |
42 min |
| S21E09 |
Epizoda 9 |
42 min |
| S21E10 |
The Volcano Factor |
42 min |
| S21E10 |
Epizoda 10 |
42 min |
| S21E11 |
The Birdman Mystery |
42 min |
| S21E12 |
The Abduction Files |
42 min |
| S21E13 |
The Giants |
42 min |
| S21E14 |
Aliens in Our Midst |
42 min |
| S21E15 |
Britain's UFO Files |
42 min |
| S21E16 |
Mysteries of the Norse Gods |
42 min |
| S21E17 |
Secrets of Japan |
42 min |
| S21E18 |
Skulls of the Gods |
42 min |
| S21E19 |
Islands of the Gods |
42 min |