导演 Edward L. Cahn

Dr. Chet Walker Richard Denning

Capt. Dave Harris S. John Launer

Frank Buchanan Michael Granger

Dr. Wilhelm Steigg Gregory Gaye

Joyce Walker Angela Stevens

Penny Walker Linda Bennett

Chief Camden Charles Evans

Dist. Atty. MacGraw Tristram Coffin

Mayor Bremer 皮埃尔·沃特金

Reporter #1 Harry Lauter

Reporter #2 拉里·J·布莱克

Tom Dunn (uncredited) Paul Hoffman

Dr. Kenneth C. Norton (uncredited) 纳尔逊·利

Jason Franchot (uncredited) Edward Coch

Gen. Saunders (uncredited) Lane Chandler

Lester Banning (uncredited) Don C. Harvey

Dick Cutting, Radio Broadcaster (uncredited) Richard H. Cutting

Gambling Casino Employee (uncredited) Paul Bradley

Willard Pearce (uncredited) Karl 'Killer' Davis

Tom, Policeman (uncredited) Terry Frost

Policeman (uncredited) Cap Somers

Police Officer (uncredited) Tyler McVey

Bartender (uncredited) Eddie Foster

Policeman (uncredited) Bill Clark

Pilot (uncredited) Chuck Hicks

Creature Who Calls Camden (uncredited) Dick Crockett

Creature (uncredited) George Bruggeman

Creature (uncredited) Charles Horvath

Creature (uncredited) Boyd 'Red' Morgan

Creature Vernon Dunn (uncredited) Michael Ross