Sezon 4
Bölümler
1 Second Skin 24 Nis 2015 2 The 1952 Wave 24 Nis 2015 3 The Freedom of Information Act 1 May 2015 4 The Space Force 1 May 2015 5 The Shoot Down Order 8 May 2015 6 Seeing Is Believing 8 May 2015 7 Inside UFOs 15 May 2015 8 Unwelcome Visitors 22 May 2015 9 Alien Journeys 29 May 2015 10 Finding Aliens 5 Haz 2015 11 UFOs Photos 1 Ağu 2015 12 UFOs From Earth 1 Ağu 2015 13 Summer of Saucers 1 Ağu 2015 14 Police Sightings 1 Ağu 2015 15 Space Shuttle Encounters 1 Ağu 2015 16 Mass Sightings 1 Eyl 2015 17 Mars, the Final Frontier 1 Eyl 2015 18 Alien Communications 1 Ara 2015 19 Artificial Alien Intelligence 1 Ara 2015 20 First Contact 1 Ara 2015