"A scientist creates Proteus, an organic supercomputer with artificial intelligence which becomes obsessed with human beings, and in particular the creator's wife."
Julie Christie
as Susan Harris
Fritz Weaver
as Alex Harris
Gerrit Graham
as Walter Gabler
Berry Kroeger
as Petrosian
Lisa Lu
as Soong Yen
Larry J. Blake
as Cameron
John O'Leary
as Royce
Alfred Dennis
as Mokri
Davis Roberts
as Warner
Patricia Wilson
as Mrs. Talbert
Dana Laurita
as Amy
Michelle Stacy
as Marlene
Felix Silla
as Baby
Tiffany Potter
E. Hampton Beagle
as Night Operator
Michael Glass
as Technician
Barbara O. Jones
Monica MacLean
as Joan Kemp
Peter Elbling
as Scientist
Georgie Paul
as Housekeeper
Robert Vaughn
as Proteus IV (voice) (uncredited)
Donald Cammell
Director
Frank Mazzola
Editor
Jerry Fielding
Original Music Composer
Dean R. Koontz
Novel
Herb Jaffe
Producer
Don L. Cash
Makeup Artist
Lee Harman
William L. McCaughey
Sound
Jordan Belson
Visual Effects
Alan Brimfeld
Second Assistant Director
Dione Taylor
Hairdresser
Terry W. King
Special Effects
Domenic Iaia
Frank Griffin
Richard L. Froman
Julie Ann Johnson
Stunts
Bo Gehring
Jerry Jost
Grant Bassett
Ron Hays
Edward Teets
Assistant Director
Tom Fisher
Glen Robinson
James F. Liles
John Riordan
Sound Editor
Bill Butler
Director of Photography
Roger O. Hirson
Screenplay
Edward C. Carfagno
Production Design
Jennifer Shull
Casting
Barbara Krieger
Set Decoration
Robert Jaffe
Steven-Charles Jaffe
Associate Producer
Regina Gruss
Publicist