阿瑟·弗兰兹

Arthur Franz

饰：Prof. Donald Blake

乔安娜·摩尔

Joanna Moore

饰：Madeline Howard (as Joanna Moore)

贾德森普拉特

Judson Pratt

饰：Lieutenant Mike Stevens

南茜·沃尔特斯

Nancy Walters

饰：Sylvia Lockwood

特洛伊·多纳休

Troy Donahue

饰：Jimmy Flanders

菲尔·哈维

Phil Harvey

饰：Sergeant Powell

海伦·维斯特考特

Helen Westcott

饰：Nurse Molly Riordan

Alexander Lockwood

饰：Professor Gilbert Howard

怀特·毕塞尔

Whit Bissell

饰：Dr. Oliver Cole

罗斯·艾略特

Ross Elliott

饰：Sergeant Eddie Daniels

Richard H. Cutting Richard H. Cutting

饰：Tom Edwards, Forest Ranger (uncredited)

Eddie Parker

饰：Donald as a monster (uncredited)

Hank Patterson

饰：Townsend, the janitor (uncredited)

安妮·安德森

Anne Anderson