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