Dr. Crippen
Ethel Le Neve
Belle Elmore
R.D. Muir (as Sir Donald Wolfit)
Captain McKenzie
Inspector Dew
Bruce Martin
Lord Chief Justice
Harry
Mrs Arditti
Mrs Jackson
Tobin
The Governor
Dr. Pepper
Dr. Rogers
Mr. Arditti
Miss Curnow
Harding
Chemist
Mrs. Stratton (uncredited)
Sgt. Mitchell (uncredited)
Police Sergeant Outside Courtroom (uncredited)
Defence QC Clerk (uncredited)
Radio Officer Andrews (uncredited)
Juror (uncredited)
Man Outside Prison (uncredited)
Courtroom Spectator (uncredited)
Prison Matron (uncredited)
Clerk of the Court (uncredited)
Police Constable (uncredited)
Ships Steward (uncredited)
2nd Lieutenant (uncredited)
Court Official (uncredited)
Howlett (uncredited)
Lodger (uncredited)