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