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?
| Actor | Role |
|---|---|
| RRey AcevedoHimself - Technical Consultant | Himself - Technical Consultant |
| JJohn LearHimself - Retired Airline Captain | Himself - Retired Airline Captain |
| RRoger LuckhurstHimself | Himself |
| PPeter MerlinHimself - Aerospace Historian | Himself - Aerospace Historian |
| PPaul MollerHimself | Himself |
| JJoe NickellHimself | Himself |
| AAlex PodovichHimself - UFO Hunter | Himself - UFO Hunter |
 Nick RedfernHimself | Himself |
| DDavid ThomasHimself - Author | Himself - Author |
| DDoug WilsonHimself - MUFON | Himself - MUFON |
 Bob LazarHimself - Physicist (archive footage) | Himself - Physicist (archive footage) |