• 
  Robert Clotworthy

  Himself - Narrator (voice)
• 
  Erich von Däniken

  Himself
• 
  Ken Storch

  Himself - Paranormal Investigator
• 
  David Childress

  Himself
• 
  Giorgio Tsoukalos

  Himself (as Giorgio A. Tsoukalos)
• 
  Nick Redfern

  Himself
• 
  Michael Dennin

  Himself (as Michael Dennin Ph.D.)
• 
  Linda Moulton Howe

  Herself

• 
  Jason Martell

  Himself
• 
  Mike Bara

  Himself
• 
  Philip Coppens

  Himself
• 
  Clifford Mahooty

  Himself - Zuni Tribal Elder
• 
  Hugh Newman

  Himself
• 
  M.J. Evans

  Herself - Landscape Geographer (as M.J. Evans Ph.D.)
• 
  Richard Leviton

  Himself