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