Sidney Fox as Mlle. Camille L'Espanaye

Bela Lugosi as Dr. Mirakle

Leon Ames as Pierre Dupin

Bert Roach as Paul

Betty Ross Clarke as Mme. L'Espanaye

Brandon Hurst as Prefect of Police

D'Arcy Corrigan as Morgue Keeper

Noble Johnson as Janos The Black One

Arlene Francis as Woman of the Streets

Ted Billings as Sideshow Spectator (uncredited)

Herman Bing as Franz Odenheimer (uncredited)

Joe Bonomo as Gorilla (uncredited)

Agostino Borgato as Alberto Montani (uncredited)

Iron Eyes Cody as Indian at Sideshow (uncredited)

Christian J. Frank as Gendarme Using Snuff (uncredited)

Charles Gemora as Erik, the Gorilla (uncredited)

Harrison Greene as Sideshow Barker (uncredited)

Charlotte Henry as Blonde Girl in Sideshow Audience (uncredited)

Harry Holman as Victor Albert Adolph Jules Hugo Louis Dupont (uncredited)

Edna Marion as Mignette (uncredited)

Torben Meyer as The Dane (uncredited)

Charles Millsfield as Bearded Man at Sideshow (uncredited)

Monte Montague as Workman / Gendarme (uncredited)

John T. Murray as Gendarme (uncredited)

Tempe Pigott as Crone (uncredited)

Dorothy Vernon as Tenant (uncredited)

Michael Visaroff as Mirakle's Sideshow Barker (uncredited)

Polly Ann Young as Girl (uncredited)