All Cast

Bela Lugosi

Bela Lugosi

Dr. Feodor Orloff / Prof. John Dearborn

Hugh Williams

Hugh Williams

Det. Insp. Larry Holt

Greta Gynt

Greta Gynt

Diana Stuart

Edmon Ryan

Edmon Ryan

Lieutenant Patrick O'Reilly

Wilfred Walter

Wilfred Walter

Blind Jake

Arthur E. Owen

Arthur E. Owen

Dumb Lou

Alexander Field

Alexander Field

Fred Grogan

Gerald Pring

Gerald Pring

Henry Stuart

O.B. Clarence

O.B. Clarence

Prof. John Dearborn (voice)

May Hallatt

May Hallatt

Police Constable Griggs

Bryan Herbert

Bryan Herbert

Police Sgt. Walsh

Charles Penrose

Charles Penrose

Morrison, undercover detective

Julie Suedo

Julie Suedo

Orloff's Secretary