Robert Logan
— T.R. Sloane
Dan O'Herlihy
— The Director
Penelope Windust
— Emma Blessing
Ann Turkel
— Sabina Dorffman
Maggie Cooper
— Chrissy Randall
Ji-Tu Cumbuka
— Torque
Paul Mantee
— James DiGiorgio
Fred Sadoff
— Armand Duke
Clive Revill
— Erik Clawson
Diana Webster
— Mother Superior
Michele Carey
— Effie (voice)
Peter Nyberg
— August Inmann
Fiona Gordon
— Sister Trilby
Tonyo Meléndez
— Cuban Officer
Michael Yama
— Photographer
Richard Lineback
— U.S. Army Enlisted Man
Lillian Müller
— Ilse Lander
Ava Lazar
— Flight Attendant
James Chandler
— Gideon Peak Guard
Roger Til
— Henir
Paula Jones
— Ground Hostess
Connie Garrison
— Model
William Meigs
— U.S. Army General
Stephen Coit
— Coroner
David Brandon
— General's Aide
Arthur Tovey
— Scientist (uncredited)