- Etienne Girardot - Dr. Doremus - Coroner
- George Meeker - Monty Montague
- Robert Warwick - Dr. Halliday
- William B. Davidson - Greeff
- Arthur Aylesworth - Trainor - Stamm's Butler
- Charles C. Wilson - Det. Hennessey
- Cliff Saum - Det. Burke (uncredited)
- Milton Kibbee - Service Station Attendant (uncredited)
- Wilfred Lucas - Police Sergeant (uncredited)
- Eric Wilton - Currey - Vance's Butler (uncredited)
- Bruce Mitchell - Commander (uncredited)
- Eddie Shubert - Detective (uncredited)
- Sam McDaniel - Steam Room Attendant (uncredited)
-
Elijah Moshinsky
-
Shaun Sutton
Capítulo disponible en las siguientes plataformas: