On screen
Cast
21 credited performers
Julie Christie
Susan Harris
Fritz Weaver
Alex Harris
Gerrit Graham
Walter Gabler
Berry Kroeger
Petrosian
Lisa Lu
Soong Yen
Larry J. Blake
Cameron
Artwork unavailable
John O'Leary
Royce
Alfred Dennis
Mokri
Davis Roberts
Warner
Patricia Wilson
Mrs. Talbert
Artwork unavailable
Dana Laurita
Amy
Michelle Stacy
Marlene
Felix Silla
Baby
Artwork unavailable
Tiffany Potter
Baby
Artwork unavailable
E. Hampton Beagle
Night Operator
Artwork unavailable
Michael Glass
Technician
Barbara O. Jones
Technician
Artwork unavailable
Monica MacLean
Joan Kemp
Peter Elbling
Scientist
Artwork unavailable
Georgie Paul
Housekeeper
Robert Vaughn
Proteus IV (voice) (uncredited)