Cast
Philip Sleeman
Carl
Henry Stephenson
Professor Jerome Hargraves
Etienne Girardot
Dr. Cotton
Nigel De Brulier
Dr. Hall
Andrew Tombes
Jury Foreman (uncredited)
Brian Donlevy
Duffy Giles
Helen Westley
Mrs. Hargraves
Hilda Vaughn
Bertha
John Carradine
Sanatorium Inmate (voice) (uncredited)
Don Rowan
Juror (uncredited)
Harry Strang
Court Attendant (uncredited)
Sara Haden
Henrietta Hargraves
Julius Tannen
City Editor
Paul McVey
Coroner
Frances Dee
Allison Lang
Charles Butterworth
Felix
Gavin Muir
Dr. Barth
Paul Stanton
District Attorney