Insurance agent-physician collects on policies of men murdered by a disfigured resident of the home for the blind where he acts as doctor-on-call.
Bela Lugosi
as Dr. Feodor Orloff / Prof. John Dearborn
Hugh Williams
as Det. Insp. Larry Holt
Greta Gynt
as Diana Stuart
Edmon Ryan
as Lieutenant Patrick O'Reilly
Wilfred Walter
as Blind Jake
Arthur E. Owen
as Dumb Lou
Alexander Field
as Fred Grogan
Gerald Pring
as Henry Stuart
O.B. Clarence
as Prof. John Dearborn (voice)
May Hallatt
as Police Constable Griggs
Bryan Herbert
as Police Sgt. Walsh
Charles Penrose
as Morrison, undercover detective
