Peter Coyote as Narrator (voice)

Stanton Friedman as Self - Nuclear Physicist, UFO Researcher

Dr. John E. Mack as Self - Psychiatrist, Harvard University (archive footage)

A.J. Gevaerd as Self - Editor, Brazilian UFO Magazine

James Fox as Self - Director/Filmmaker

Marco Aurélio Leal as Self - Brazilian Researcher

Cinthya Covo Leão as Self - Psychologist

Carlos de Sousa as Self

Marco Antonio Petit as Self - Brazilian Researcher

Marta Tavares as

Roger Leir as Self (archive footage)