导演

William Nigh

编剧

Hugh Wiley

Houston Branch

制片人

Charles J. Bigelow

Scott R. Dunlap

演员

波利斯·卡洛夫

Boris Karloff

饰  Mr. James Lee Wong

Grant Withers

饰  Captain Sam Street

Maxine Jennings

饰  Myra Ross, Dayton's

Evelyn Brent

饰  Olga Petroff/Countes

George Lloyd

饰  Detective Lt. Devlin

Lucien Prival

饰  Anton Mohl, aka Baro

John St. Polis

饰  Carl Roemer, Poison

William Gould

饰  Theodore Meisel, Day

Hooper Atchley

饰  Christian Wilk, Dayt

John Hamilton

饰  Simon Dayton, Presid

Wilbur Mack

饰  Russell, Dayton's Of

Lee Tung Foo

饰  Tchin, Wong's Servan

Lynton Brent

饰  Detective Tommy

Grace Wood

饰  Mrs. Carl Roemer

Frank Bruno

饰  Lescardi, Mohl's Hen

Ed Cassidy

饰  Ambulance Doctor (un

Wheaton Chambers

饰  Chemistry Lab Direct

Clancy Cooper

饰  Warehouse Man (uncre

Lester Dorr

饰  Detective (uncredite

Herbert Evans

饰  Mr. Wilk's Butler (u

摄影

Harry Neumann

音效

Karl Zint

音乐

Edward J. Kay

化妆

Gordon Bau

副导演/助理导演

W.B. Eason

剪辑

Russell F. Schoengarth