John Justin as Philip Chance

Margaret Leighton as Helen Teckman

Duncan Lamont as Detective Inspector Hilton

Raymond Huntley as Maurice Miller

Meier Tzelniker as John Rice

Roland Culver as Detective Inspector-Major Harris

Michael Medwin as Martin Teckman

Jane Wenham as Ruth Wade

George Coulouris as Andrew Garvin

Harry Locke as Leonard

Warwick Ashton as The Detective Sergeant

Andreas Malandrinos as Small Waiter

Mollie Palmer as Stewardess

Irene Lister as Waitress

Maurice Lane as Messenger Boy

Bruce Beeby as Det. Wallace

Ben Williams as Tour Guide

Frank Webster as Tour Guide

Dan Cressey as Drake

Peter Taylor as Leroy

Gordon Morrison as Boris

Gwen Nelson as Duty Woman

Fanny Rowe as Eileen Miller

Mary Crant as BEA Clerk

Peter Augustine as Man with Pipe