Sam Nash
Patrick Lowe
Lauren Daly
Cheryl Arutt
Oakley
Barry Schreiber
Lab Assistant
Paul Bridges Thompson
Nurse
Sally Carlson
Sam's Roommate
Greg Schmidt
Janitor
Mal Jones
Ethridge
Bo Svenson
Chas
Luis Valderrama
Bryan
John Baldwin
Debbie
Sarah Buxton
Lovejoy
Doug Sloan
Frank Duffy
Mitch Watson
Prof. Jenkins
Turk Harley
Kimberley
Jennifer Hingel
Writer
Umberto Lenzi
Producer
William J. Immerman
Original Music Composer
Claudio Simonetti
Special Effects
Carlo Rambaldi
Visual Effects
Stunts
Jay Amor
Director
Vittorio Rambaldi
Josi W. Konski
Editor
John Rawson
Casting
Billy DaMota
Makeup Artist
Frank Cacciatori
Makeup Effects
Alex Rambaldi
Costume Supervisor
Leslie Herman
James Justice
Director of Photography
Antonio Climati