Sezon 4
Bölümler
1 The Mayan Conspiracy 17 Şub 2012 
2 The Doomsday Prophecies 17 Şub 2012 
3 The Greys 24 Şub 2012 
4 Aliens and Mega-Disasters 2 Mar 2012 
5 The NASA Connection 9 Mar 2012 
6 The Mystery of Puma Punku 16 Mar 2012 
7 Aliens and Bigfoot 23 Mar 2012 
8 The Da Vinci Conspiracy 6 Nis 2012 
9 The Time Travelers 27 Nis 2012 
10 Aliens and Dinosaurs 4 May 2012