Dale Timothy White
В роли: Self - Host (как Tim White)

Frederick Valentich
В роли: Self - Pilot (segment "Without a Trace") (голос) (хроника)

Guido Valentich
В роли: Self - Frederick's Father (segment "Without a Trace")

Colin Hayvice
В роли: Self - Biologist & Researcher (segment "Without a Trace")

Роберт Дин
В роли: Self - Retired Command Sergeant Major (segment "Without a Trace")

Des Ball
В роли: Self - Author, Pine Gap (segment "Without a Trace") (как Desmond Ball)

Roy Manifold
В роли: Self - Amateur Photographer (segment "Without a Trace")

Rupert Sheldrake
В роли: Self - Author & Researcher (segment "In the News")

Mindi Wynne
В роли: Self - Experienced Human-Animal Bond (segment "In the News")

Joshua Prager
В роли: Self - UCLA Pain Medicine Center (segment "In the News")

Thomas Samaras
В роли: Self - Longevity Researcher (segment "In the News")

Carla Wohl
В роли: Self - Correspondent (segment "Vision Quest")

Millie McGregor
В роли: Self - Rescued Hiker (segment "Vision Quest")

James Marks
В роли: Self - Placer County Search and Rescue (segment "Vision Quest")

James McGregor
В роли: Self - Millie's Husband (segment "Vision Quest")

Randy Spears
В роли: Self - Experienced Unexplained Vision (segment "Vision Quest")

Rochelle Spears
В роли: Self - Randy's Wife (segment "Vision Quest")

Frank Smith
В роли: Self - Assisted in Rescue (segment "Vision Quest")

John Hecksher
В роли: Self - HAARP Program Manager (segment "The Doomsday Machine")

Michael C. Kelley
В роли: Self - Professor of Electrical Engineer, Cornell (segment "The Doomsday Machine")

Mark Farmer
В роли: Self - Science Writer (segment "The Doomsday Machine")

Nick Begich Jr.
В роли: Self - Author, Angels Don't Play This HAARP (segment "The Doomsday Machine") (как Nick Begich)

Patrick Flanagan
В роли: Self - Physicist (segment "The Doomsday Machine")

Cynthia Hind
В роли: Self - Author & UFO Researcher (segment "Update: UFO Investigation")

John E. Mack
В роли: Self - Professor of Psychiatry, Harvard University (segment "Update: UFO Investigation")