Robert Newton as Dr. Clive Riordan

Phil Brown as Bill Kronin

Sally Gray as Storm Riordan

Naunton Wayne as Supt. Finsbury

James Harcourt as Aitkin (butler)

Betty Cooper as Miss Stevens (receptionist)

Allan Jeayes as The Colonel, blustery club member

Ronald Adam as Talkative, balding club member

Roddy Hughes as Bespectacled third club member, from Whitehall

Olga Lindo as Mrs. Humphries

Stanley Baker as Policeman at Garage

Russell Waters as Detective at Garage

Michael Balfour as American Sailor Promoting Book

Sam Kydd as Club steward

Ernest Clark as

Lyonel Watts as Club Member