贝拉·卢戈西

Bela Lugosi

饰：Dr. Melcher,Monsieur Colomb

Joan Barclay

饰：Alice Saunders

George Pembroke

饰：Dr. William Saunders

克雷顿·摩尔

Clayton Moore

饰：FBI Agent Richard 'Dick' Martin

罗伯特·弗雷泽

Robert Frazer

饰：Amos Hanlin

Edward Peil Sr.

饰：Ryder (as Edward Piel Sr.)

Robert Fiske

饰：Phillip Wallace

Irving Mitchell

饰：John Van Dyke

肯尼思·哈尔兰

Kenneth Harlan

饰：FBI Chief Colton

Max Hoffman Jr.

饰：Kearney

Frank Melton

饰：FBI agent

Joseph Eggenton

饰：Stevens, the butler

I·斯坦福·乔利

I. Stanford Jolley

饰：The Dragon (as Stanford Jolley)

杰克·奇塔姆

Jack Cheatham

饰：Policeman (uncredited)

伯纳德·戈尔塞

Bernard Gorcey

饰：The Cabbie (uncredited)

Jack Holmes

饰：Industrialist (uncredited)