Synopsis
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?
Episodes
Season 11
Red AlertUFO sightings over nuclear facilities trigger high alert responses - are they top-secret aircraft or something from another world?48m2
Black TrianglesAn investigation into triangular-shaped UFOs seen in the 1980s and 90s - they might be the best evidence of extraterrestrial crafts?48m3
Battle of Los AngelesAnti-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?48m4
UFO Crash SitesRoswell is the most famous UFO story in history and a piece of debris found at the desert crash site might shed new light on what really happened in 1947.48m5
Shoot 'em DownTrue stories of fighter pilot encounters with unidentified flying objects in our skies – including pilots who were ordered to ‘shoot ‘em down’. 48m6
UFOs vs. AirlinersWell-documented sightings of UFOs by commercial airliner pilots may be proof of danger lurking in our skies.48m
Red AlertUFO sightings over nuclear facilities trigger high alert responses - are they top-secret aircraft or something from another world?48m2Black TrianglesAn investigation into triangular-shaped UFOs seen in the 1980s and 90s - they might be the best evidence of extraterrestrial crafts?48m3Battle of Los AngelesAnti-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?48m4UFO Crash SitesRoswell is the most famous UFO story in history and a piece of debris found at the desert crash site might shed new light on what really happened in 1947.48m5Shoot 'em DownTrue stories of fighter pilot encounters with unidentified flying objects in our skies – including pilots who were ordered to ‘shoot ‘em down’. 48m6UFOs vs. AirlinersWell-documented sightings of UFOs by commercial airliner pilots may be proof of danger lurking in our skies.48mCast
