Cary Grant

Walter Christopher Eckland

Leslie Caron

Catherine Freneau

Trevor Howard

Commander Frank Houghton

Jack Goode

Lieutenant Stebbings

Nicole Felsette

Dominique

Verina Greenlaw

Christine

Pip Sparke

Anne

Jennifer Berrington

Elizabeth Anderson

Laurelle Felsette

Angelique

Sharyl Locke

Jenny

Simon Scott

Captain of Submarine

John Napier

Lt. Cartwright (uncredited)

Richard Lupino

Radioman (uncredited)

Alex Finlayson

Doctor Bigrave (uncredited)

Peter Forster

Chaplain (uncredited)

Ken Swofford

Helmsman

Ralph Nelson

Director

Robert Arthur

Producer

Peter Stone

Writer

Frank Tarloff

Writer