Gary Cooper

Gideon Patch

Acting

Charlton Heston

John Sands

Acting

Michael Redgrave

Mr. Nyland

Acting

Virginia McKenna

Janet Taggart

Acting

Richard Harris

Higgins

Acting

Emlyn Williams

Sir Wilfred Falcett

Acting

Alexander Knox

Petrie

Acting

Cecil Parker

Inquiry Chairman

Acting

Ben Wright

Mike Duncan

Acting

Peter Illing

Gunderson

Acting

Terence de Marney

Acting

Ashley Cowan

Acting

Charles Davis

Acting

John Le Mesurier

Attorney

Acting

Noel Drayton

Charlie Bell

Acting

John Dearth

Reporter

Acting

Paul Bryar

Port Official (uncredited)

Acting

Albert Carrier

Ambulance Attendant (uncredited)

Acting

Louis Mercier

Commander of Police (uncredited)

Acting

Ron Nyman

Seaman (uncredited)

Acting

Lomax Study

Photographer (uncredited)

Acting