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?

Cast:Brad Cartner,

Genre:Documentary,

country:none

Production:Canada Media Fund | Fonds des médias du Canada, Company X Studios, U&Yesterday, UKTV,