导演

欧文·皮切尔

Irving Pichel

编剧

Richard English

Endre Bohem

演员

Robert Livingston

饰  Dr. Lawrence Baxter

Grace Bradley

饰  Jean Sterling

Willard Robertson

饰  Inspector 'Mac&

Pierre Watkin

饰  Kennedy

Smiley Burnette

饰  Jimmy

Granville Bates

饰  Prof. Rexford Sterli

William Newell

饰  Andrews

Byron Foulger

饰  Pete Andorka

Wilbur Mack

饰  F. J. ThompsonWillar

Matty Fain

饰  Burke

Josephine Whittell

饰  Nurse Nelson

Charles Timblin

饰  Swain

Billy Griffith

饰  KelloggWilliam H. Gr

威廉姆·霍珀

William Hopper

饰  AnnouncerDe Wolf Hop

Frank Du Frane

饰  Golden

Florence Gill

饰  Spinster

Richard Beach

饰  Henchman (uncredited

Monte Montague

饰  Henchman (uncredited

Mary Russell

饰  Nurse (uncredited)

Carleton Young

饰  Henchman (uncredited

摄影

Jack A. Marta

音效

Harry Jones

Murray Seldeen

Harry Grey

Hugo Riesenfeld

服装

Eloise

剪辑

Edward Mann