- Bull Anderson - Otto, museum janitor
- Holmes Herbert - Dr. Rasmussen
- Claude King - Mr. Galatalin
- William B. Davidson - Detective (Uncredited)
- Guy Usher - Detective (Uncredited)
- DeWitt Jennings - Police Captain, 12th Precinct
- Robert Homans - Desk Sergeant, 12th Precinct
- James Donlan - Morgue Attendant (Uncredited)
- Thomas E. Jackson - Detective at Morgue
- Frank Darien - Autopsy Surgeon (Uncredited)
- Wallis Clark - Autopsy Surgeon's Assistant (Uncredited)
- Monica Bannister - Joan Gale
- Robert Emmett O'Connor - Police Sergeant by Christmas tree
- Lon Poff - Tall Thin Henchman (Uncredited)
- Max Barwyn - Museum Visitor (Uncredited)
- Wade Boteler - Ambrose (Uncredited)
- Otto Hoffman - Igor's Assistant (Uncredited)
- Perry Ivins - Copy Editor (Uncredited)
- Margaret Mann - Wax Figure of Queen Victoria (Uncredited)
- Pat O'Malley - Plainclothesman (Uncredited)
- Milton Kibbee - Reporter (Uncredited)
- Harry C. Bradley - Reporter (Uncredited)
- Charles McMurphy - Policeman in Prison (Uncredited)
- Frank Fanning - Policeman (Uncredited)
- Dick Rush - Policeman (Uncredited)
- Lee Shumway - Policeman (Uncredited)
- William Wagner - Morgue Attendant's Assistant (Uncredited)
- Frank Austin - Winton's Valet (Uncredited)
- Walter Percival - Winton's Attorney (Uncredited)
- Michael Curtiz
- Carl Erickson
- Hal B. Wallis
- William Koenig
- Leo F. Forbstein
Capítulo disponible en las siguientes plataformas:
