Season 15 aired between 25 Jan 2020 and 18 Apr 2020, 12 episodes.
Episodes
E01
The Mystery of Nan Madol
25 Jan 2020
E02
The Relics of Roswell
01 Feb 2020
E03
Destination Chile
08 Feb 2020
E04
The Real Men in Black
15 Feb 2020
E05
The Mystery of the Stone Giants
22 Feb 2020
E06
The World Before Time
29 Feb 2020
E07
They Came from The Pleiades
07 Mar 2020
E08
The Immortality Machine
14 Mar 2020
E09
The Shapeshifters
21 Mar 2020
E10
The Mystery of Skinwalker Ranch
28 Mar 2020
E11
The Ultimate Guide to UFOs
11 Apr 2020
E12
Aliens and the Presidents
18 Apr 2020