Sezon 4
Bölümler
1 Roswell - Secrets Unveiled 2 Impostors or Cosmic Visionaries? 3 UFO's Lies and Videotapes 4 The Science of the Unexplained 5 Unsolved Mysteries 6 Strange Abductions 7 Cosmic Conspiracy 8 Mysterious Phenomena 9 Future Perfect 10 Journeys to Elsewhere 11 UFO's, Culture and Media 12 The Day the Gods Fell to Earth