| 1x02 The Visitors | 27/04/2010 |
| 1x03 The Mission | 04/05/2010 |
| 1x04 Closer Encounters | 18/05/2010 |
| 1x05 The Return | 25/05/2010 |
| 4x02 The Doomsday Prophecies | 17/02/2012 |
| 4x08 The Da Vinci Conspiracy | 06/04/2012 |
| 5x08 The Power of Three | 30/09/2013 |
| 5x09 The Crystal Skulls | 07/10/2013 |
| 5x10 The Anunnaki Connection | 14/10/2013 |
| 5x12 The Satan Conspiracy | 28/10/2013 |
| 5x13 Alien Operations | 01/11/2013 |
| 5x15 Mysterious Relics | 15/11/2013 |
| 6x02 Aliens and the Lost Ark | 06/12/2013 |
| 6x12 Alien Transports | 13/06/2014 |
| 8x01 Aliens B.C. | 24/07/2015 |
| 8x02 NASA's Secret Agenda | 31/07/2015 |
| 8x03 Aliens and Robots | 07/08/2015 |
| 12x06 The Science Wars | 02/06/2017 |
| 12x08 The Alien Frequency | 16/06/2017 |
| 12x16 Return to Gobekli Tepe | 15/09/2017 |
| 13x01 The UFO Conspiracy | 27/04/2018 |
| 13x02 Da Vinci's Forbidden Codes | 04/05/2018 |
| 13x03 The Alien Protocols | 11/05/2018 |
| 13x04 Earth's Black Holes | 18/05/2018 |
| 13x05 The Desert Codes | 25/05/2018 |
| 13x07 Earth Station Egypt | 20/07/2018 |
| 13x08 Island of the Giants | 27/07/2018 |
| 13x10 The Sentinels | 10/08/2018 |
| 13x11 Russia Declassified | 17/08/2018 |
| 13x12 They Came from the Sky | 24/08/2018 |
| 13x13 The Artificial Human | 31/08/2018 |
| 13x14 The Alien Phenomenon | 04/01/2019 |
| 13x15 Return to Mars | 07/01/2019 |
| 14x01 Return to Antarctica | 31/05/2019 |
| 14x02 The Badlands Guardian | 07/06/2019 |
| 14x03 Element 115 | 14/06/2019 |
| 14x04 The Star Gods of Sirius | 21/06/2019 |
| 14x05 They Came from the Sea | 28/06/2019 |
| 14x06 Secrets of the Maya | 05/07/2019 |
| 14x07 The Druid Connection | 19/07/2019 |
| 14x08 The Reptilian Agenda | 26/07/2019 |
| 14x10 Project Hybrid | 09/08/2019 |
| 14x11 The Trans-Dimensionals | 16/08/2019 |
| 14x12 Islands of Fire | 23/08/2019 |
| 14x13 The Constellation Code | 30/08/2019 |
| 14x14 The Nuclear Agenda | 06/09/2019 |
| 14x15 The Alien Mountain | 04/10/2019 |
| 14x16 The Alien Brain | 11/10/2019 |
| 14x17 The Secrets of Stonehenge | 18/10/2019 |
| 14x18 Food of the Gods | 01/11/2019 |
| 14x21 Countdown to Disclosure | 22/11/2019 |
| 14x22 Secrets of the Exoplanets | 29/11/2019 |
| 15x01 The Mystery of Nan Madol | 25/01/2020 |
| 15x02 The Relics of Roswell | 01/02/2020 |
| 15x05 The Mystery of the Stone Giants | 22/02/2020 |
| 15x06 The World Before Time | 29/02/2020 |
| 15x07 They Came from the Pleiades | 07/03/2020 |
| 15x10 The Mystery of Skinwalker Ranch | 28/03/2020 |
| 15x12 Aliens and the Presidents | 18/04/2020 |
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