波利斯·卡洛夫

Boris Karloff

饰：David Mallory

琼·罗杰斯

Jean Rogers

饰：Joan Mallory

沃伦·赫尔

Warren Hull

饰：Jim Travis (as J. Warren Hull)

萨缪尔·S·辛兹

Samuel S. Hinds

饰：Steven Ranger

霍巴特·卡瓦诺

Hobart Cavanaugh

饰：Petty Louie

David Oliver

饰：Mike Callahan

查尔斯·C·威尔逊

Charles C. Wilson

饰：Police Capt. Wallace

艾伦·巴克斯特

Alan Baxter

饰：The Kid

沃德·邦德

Ward Bond

饰：Fingers

弗兰克·瑞切尔

Frank Reicher

饰：Karl, gang engineer

埃德温·麦克斯威尔

Edwin Maxwell

饰：Lawyer Kruger

George Humbert

饰：Mr. Spinelli

Nina Campana

饰：Mrs. Spinelli

Michael Fitzmaurice

饰：Ranger's Male Secretary

Ruth Fallows

饰：A Waitress

George Cleveland

饰：Sam Adams, company engineer

拉尔夫·邓恩

Ralph Dunn

饰：ABC Delivery Garageman-Thug

Antonio Filauri

弗兰克·哈格尼

Frank Hagney

饰：A Thug

伊桑·莱德劳

Ethan Laidlaw

饰：A Thug

杰克·奇塔姆

Jack Cheatham

饰：Thug (uncredited)

Hal Cooke

饰：Cafe Manager (uncredited)

Tom Hanlon

饰：Radio Newscaster (uncredited)

乔治·麦格瑞

George Magrill

饰：Thug (uncredited)

蒙特·蒙塔古

Monte Montague

饰：Thug (uncredited)

Henry Roquemore

饰：Man on Stoop with Dog (uncredited)

查尔兹·歇洛克

Charles Sherlock

饰：Lead Reporter (uncredited)

查尔斯·沙利文

Charles Sullivan

饰：Joan's Cab Driver (uncredited)

Jack Watson

Jack Watson

饰：(uncredited)

Johnnie Morris

Robert Whitney

Robert Whitney

Warren Hull

饰：Jim Travers,(as J. Warren Hull)

罗伊·巴克罗夫特

Roy Barcroft