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?

• Paul NelsonDirector

• 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
• David ThomasHimself - Author
• Doug WilsonHimself - MUFON
• Bob LazarHimself - Physicist (archive footage)