Doctor X

Arthur Edmund Carewe

Dr. Rowitz

Leila Bennett

Mamie

Robert Warwick

Commissioner Stevens

George Rosener

Otto, Dr. Xavier's Butler

Willard Robertson

Detective O'Halloran

Thomas E. Jackson

Daily World Editor

Harry Holman

Mike, Waterfront Policeman

Mae Busch

Cathouse Madame

Tom Dugan

Sheriff

Raoul Freeman

Morgue Detective (Uncredited)

Selmer Jackson

Willard Keefe, Daily World Night Editor (Uncredited)

Charles McMurphy

Detective at Headquarters (Uncredited)

Ky Robinson

Morgue Detective (Uncredited)

Louise Beavers

Louise (Uncredited)