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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - The Mayan Conspiracy | 17/02/2012 |
| S04E02 - The Doomsday Prophecies | 17/02/2012 |
| S04E03 - The Greys | 24/02/2012 |
| S04E04 - Aliens and Mega-Disasters | 02/03/2012 |
| S04E05 - The NASA Connection | 09/03/2012 |
| S04E06 - The Mystery of Puma Punku | 16/03/2012 |
| S04E07 - Aliens and Bigfoot | 23/03/2012 |
| S04E08 - The Da Vinci Conspiracy | 06/04/2012 |
| S04E09 - The Time Travelers | 27/04/2012 |
| S04E10 - Aliens and Dinosaurs | 04/05/2012 |
| S04E11 - Secrets of the Pyramids | 21/12/2012 |
| S04E12 - Aliens and Cover-Ups | 28/12/2012 |
| S04E13 - Alien Power Plants | 04/01/2013 |
| S04E14 - Destination Orion | 11/01/2013 |
| S04E15 - The Einstein Factor | 18/01/2013 |