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Investigates the mysteries behind declassified top secret government files with stunning details about the world's most credible UFO sightings and alien encounters. The series pieces together the data on these incidents, and tries to answer the question: what really happened?
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First episodes — open an episode to play
E1Red Alert
48 min
UFO sightings over nuclear facilities trigger high alert responses - are they top-secret aircraft or something from another world?
E2Black Triangles
48 min
An investigation into triangular-shaped UFOs seen in the 1980s and 90s - they might be the best evidence of extraterrestrial crafts?
E3Battle of Los Angeles
48 min
Anti-aircraft guns blast the skies over Los Angeles when an unknown flying object is spotted by thousands in 1942 - is it from earth or could it be extra-terrestrial?
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