The Truth Behind: UFOs

UFO sightings have been on the rise since the 1940s, with thousands reported every year -- but is alien existence all a figment of our imagination?

Top Cast

Rey AcevedoHimself - Technical Consultant

John LearHimself - Retired Airline Captain

Roger LuckhurstHimself

Peter MerlinHimself - Aerospace Historian

Paul MollerHimself

Joe NickellHimself

Alex PodovichHimself - UFO Hunter

Nick RedfernHimself