Cast
John Arnatt
Chief Inspector Dew
Hamilton Dyce
Dr. Rogers
Guy Standeven
Ships Steward (uncredited)
Coral Browne
Belle Crippen
Donald Wolfit
R.D. Muir (as Sir Donald Wolfit)
Edward Underdown
The Governor
Max Faulkner
Radio Officer Andrews (uncredited)
Samantha Eggar
Ethel Le Neve
Olga Lindo
Mrs. Clara Arditti
Totti Truman Taylor
Miss Curnow
Donald Pleasence
Dr. Hawley Harvey Crippen
Paul Carpenter
Bruce Martin
Oliver Johnston
Lord Chief Justice
Basil Henson
Mr. Arditti
James Robertson Justice
Captain McKenzie
Geoffrey Toone
Mr. Tobin