Full Cast & Crew

Top Billed Cast

Bela Lugosi

Dr. Feodor Orloff / Prof. John Dearborn

Hugh Williams

Det. Insp. Larry Holt

Greta Gynt

Diana Stuart

Edmon Ryan

Lieutenant Patrick O'Reilly

Wilfred Walter

Blind Jake

Arthur E. Owen

Dumb Lou

Full Cast

Alexander Field

Fred Grogan

Gerald Pring

Henry Stuart

O.B. Clarence

Prof. John Dearborn (voice)

May Hallatt

Police Constable Griggs

Bryan Herbert

Police Sgt. Walsh

Charles Penrose

Morrison, undercover detective

Julie Suedo

Orloff's Secretary

Crew

Walter Summers

Director

Edgar Wallace

Novel

John Argyle

Producer

Patrick Kirwan

Screenplay

John Argyle

Screenplay

Walter Summers

Screenplay

Bryan Langley

Director of Photography

Guy Jones

Original Music Composer

Jan Van Lusil

Additional Dialogue

Hamilton G. Inglis

Production Manager

Harry Benson

Sound Supervisor

A.E. Rudolph

Sound Recordist

Ted Richards

Editor

Duncan Sutherland

Art Direction

Jack Martin

Assistant Director

Ronald Anscombe

Camera Operator

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