David Warbeck

Craig Milford

Laura Trotter

Joanna Fitzgerald

John Ireland

Anderson

Loris Loddi

Dr. Elliott

Giorgio Favretto

Roach

Victor Beard

Inspector Morris

Sergio Rossi

Professor Schweikert

Giorgio Bonora

Dr. Warmick

Stefano Mazzitelli

Alessandra Canale

Susan

Pat Starke

Dr. Janet Stein

Mauro Magliozzi

Nazzareno Cardinali

Carolyn De Fonseca

voice dubbing (US version) (uncredited)

Ted Rusoff

voice dubbing (US version) (uncredited)

Robert Spafford

voice dubbing (US version) (uncredited)