迈克尔·惠伦

Michael Whalen

饰：Robert Norton

安妮·内格尔

Anne Nagel

饰：Nancy Fielding

威廉·贝克

William Beck

饰：Tom Fielding

Constance Worth

饰：Linda Pavlo

汉斯·海因里希·冯·特尔瓦多夫斯基

Hans Heinrich von Twardowski

饰：Capt. Gemmler (as Hans von Twardowski)

杰克·茂豪尔

Jack Mulhall

饰：Chief Agent James Curtis

George Pembroke

饰：Prof. Karl Schmidt

肯尼思·哈尔兰

Kenneth Harlan

饰：Agent Brown

罗伯特·弗雷泽

Robert Frazer

饰：John Oliver

Hans von Morhart

饰：Heinrich, kidnapper

Michael Vallon

饰：Argus, blind spy

Willy Castello

饰：Otto - Tavern spy

George Burr Macannan

饰：Wolf, kidnap car driver (uncredited)

弗兰克·梅奥

Frank Mayo

饰：Detective shadowing Tom (uncredited)

C. Montague Shaw

饰：Franklin Prescott (uncredited)

Rudolf Steinboeck

威廉姆耶特

William Yetter Sr.

Crane Whitley

乔治·莫雷尔

George Morrell

杰克·奇塔姆

Jack Cheatham

Jack Gardner