Presidential Encounters: MUFON files question whether the US presidents have been hiding evidence of UFOs. Plus, did Nixon, Eisenhower and Reagan witness UFOs first hand? (S1, ep 5)
Hunted By UFOs: Experts unseal files documenting how people have been hunted by UFOs, some more than once. What could these UFOs want? And could you be their next target? (S2, ep 4)
Unfriendly Skies: Secret files reveal astonishing reports of incidents where UFOs have chased aeroplanes, as well as dozens of sightings of a UFO over Chicago airport. (S1, ep 4)
Star People: Files in Hangar 1 reveal Native American stories of beings they referred to as 'Star People'. Could such tribal lands have hosted interstellar visitors? (S2, ep 3)
Alien Technology: We live in the golden age of technology but is everything around us a testament to the power of the human brain or did we have extraterrestrial help? (S1, ep 3)
Men In Black: Rumour has it that UFO witnesses have been scared into silence by mysterious Men in Black. Who are these ominous enforcers? And who might they be working for? (S2, ep 2)
Shadow Government: Experts investigate case files that suggest a shadow government is taking extreme measures to keep secrets about UFOs from the public. (S1, ep 2)
The Smoking Gun: Experts hunt for the truth about UFOs in a warehouse packed with files. Could a covert manual prove the US government is hiding extraterrestrial secrets? (S2, ep 1)
Space Weapons: Experts search for the truth about UFOs in Hangar One: an Ohio warehouse full of files about alleged alien sightings and potential government cover-ups.