Keir Dullea

Julian Bedford

Suzanna Love

Kaylie Bedford

Vera Miles

Marian Koonan

Tony Curtis

Dr. Clavius

Percy Rodriguez

Dr. Robinson

Paul Willson

Dr. Schroder

Eve Brent

Mrs. Simpson

Nicholas Love

Willy Meiser

Corinne Wahl

Leila Adams (as Corinne Alphen)