Keir Dullea
Devon
Robin Ward
Garth
Gay Rowan
Rachel
William Osler
Computer / Host
James Barron
Garth's Father
John Colicos
The Governor
Gillie Fenwick
Old Abraham
Scott Fisher
Small Boy
Paul Geary
The Guard
Kay Hawtrey
Garth's Mother
Sterling Hayden
Jeremiah
Dominic Hogan
The Priest
Michael Kirby
The Captain
Barry Morse
Shalith
