Julie London
— Mary Loring
Anthony Steel
— Mark Loring
Basil Sydney
— Sir John Loring
Donald Houston
— Mr. Jacobus
Anton Diffring
— Carl Dieter
Andrew Cruickshank
— Dr. Cameron
Frank Thring
— Mr. Stanley
Conrad Phillips
— Mario
Kynaston Reeves
— Judge
Arthur Gomez
— Spanish Doctor
Georgina Cookson
— Mrs. Duncan
Richard Caldicot
— Mr. Duncan
Rodney Burke
— 2nd Barrister