On screen
Cast
21 credited performers
Gary Cooper
Gideon Patch
Charlton Heston
John Sands
Michael Redgrave
Mr. Nyland
Virginia McKenna
Janet Taggart
Richard Harris
Higgins
Emlyn Williams
Sir Wilfred Falcett
Alexander Knox
Petrie
Cecil Parker
Inquiry Chairman
Ben Wright
Mike Duncan
Peter Illing
Gunderson
Terence de Marney
Character not listed
Artwork unavailable
Ashley Cowan
Character not listed
Charles Davis
Character not listed
John Le Mesurier
Attorney
Noel Drayton
Charlie Bell
John Dearth
Reporter
Paul Bryar
Port Official (uncredited)
Albert Carrier
Ambulance Attendant (uncredited)
Louis Mercier
Commander of Police (uncredited)
Artwork unavailable
Ron Nyman
Seaman (uncredited)
Artwork unavailable
Lomax Study
Photographer (uncredited)