导演

Walter Summers

编剧

John Argyle

Patrick Kirwan

Walter Summers

Jan Van Lusil

Edgar Wallace

制片人

Hamilton G. Inglis

演员

贝拉·卢高西

Bela Lugosi

饰  Dr. Feodor Orloff/Pr

Hugh Williams

饰  Det. Insp. Larry Hol

Greta Gynt

饰  Diana Stuart

Edmon Ryan

饰  Lieutenant O'Reilly

Wilfred Walter

饰  Jake

Alexander Field

饰  Fred Grogan

O.B. Clarence

饰  Prof. John Dearborn

May Hallatt

饰  Policewoman Grady (u

Bryan Herbert

饰  Police Supt. Walsh (

Arthur E. Owen

饰  Blind Lou (uncredite

Charles Penrose

饰  Morrison, undercover

Gerald Pring

饰  Henry Stuart (uncred

Julie Suedo

饰  Orloff's Secretary (

摄影

Bryan Langley

音效

Harry Benson

A.E. Rudolph

Ronald Anscombe

音乐

Guy Jones

艺术指导

Duncan Sutherland

副导演/助理导演

Jack Martin

剪辑

E.G. Richards