理查德·邓宁

Richard Denning

饰：Frank Brooks

凯瑟琳·克劳利

Kathleen Crowley

饰：Nora King

弗吉尼亚·格雷

Virginia Grey

饰：Vicki Harris

理查德·里夫斯

Richard Reeves

饰：Jim Wilson

Robert Roark

饰：Davis, the Killer

Mort Marshall

饰：Charles Otis

Arthur Space

饰：Lt. General Wood

怀特·毕塞尔

Whit Bissell

饰：Tom, Chief research scientist

James Drake

James Drake

饰：Lieutenant (as Jim Drake)

史蒂夫·彭德尔顿

Steve Pendleton

饰：Colonel

小豪斯·彼得斯

House Peters Jr.

饰：Technician

Steve Calvert

饰：Alien robot (uncredited)

赫尔曼·科恩

Herman Cohen

饰：Lab Technician (uncredited)

杰弗里·塞尔

Jeffrey Sayre

饰：Army Staff Officer (uncredited)