Marshall Thompson
— Dr. Cliff Mitchell
John Loder
— Major Anderson
Henry Oscar
— John Manning
John Stuart
— Dr. Warren
Anne Aubrey
— Jill Warren
Magda Miller
— Ruth
Murray Kash
— Waldo
Michael Mellinger
— Tony Norwood
Robert MacKenzie
— Dale
Tom Bowman
— Charles
Peter Elliott
— Syms
Bernard Archard
— Inspector
Shirley Thieman
— Shiela