- Harry Lauter - Reporter #1
- Larry J. Blake - Reporter #2
- Paul Hoffman - Tom Dunn (uncredited)
- Nelson Leigh - Dr. Kenneth C. Norton (uncredited)
- Edward Coch - Jason Franchot (uncredited)
- Lane Chandler - Gen. Saunders (uncredited)
- Don C. Harvey - Lester Banning (uncredited)
- Richard H. Cutting - Dick Cutting, Radio Broadcaster (uncredited)
- Paul Bradley - Gambling Casino Employee (uncredited)
- Karl 'Killer' Davis - Willard Pearce (uncredited)
- Terry Frost - Tom, Policeman (uncredited)
- Cap Somers - Policeman (uncredited)
- Tyler McVey - Police Officer (uncredited)
- Eddie Foster - Bartender (uncredited)
- Bill Clark - Policeman (uncredited)
- Chuck Hicks - Pilot (uncredited)
- Dick Crockett - Creature Who Calls Camden (uncredited)
- George Bruggeman - Creature (uncredited)
- Charles Horvath - Creature (uncredited)
- Boyd 'Red' Morgan - Creature (uncredited)
- Michael Ross - Creature Vernon Dunn (uncredited)
-
Edward L. Cahn
- Curt Siodmak
- Curt Siodmak
- J.S. Westmoreland
Richard Denning interpreta a Dr. Chet Walker en la película.
S. John Launer interpreta a Capt. Dave Harris en la película.
Michael Granger interpreta a Frank Buchanan en la película.
Gregory Gaye interpreta a Dr. Wilhelm Steigg en la película.
Angela Stevens interpreta a Joyce Walker en la película.
Linda Bennett hace el papel de Penny Walker.
Charles Evans hace el papel de Chief Camden.
Tris Coffin interpreta a Dist. Atty. MacGraw en la película.
Pierre Watkin interpreta a Mayor Bremer en la película.
Harry Lauter interpreta a Reporter #1 en la película.
Larry J. Blake hace el papel de Reporter #2.
Paul Hoffman interpreta a Tom Dunn (uncredited) en la película.
Nelson Leigh hace el papel de Dr. Kenneth C. Norton (uncredited).
Edward Coch interpreta a Jason Franchot (uncredited) en la película.
Lane Chandler hace el papel de Gen. Saunders (uncredited).
Don C. Harvey interpreta a Lester Banning (uncredited) en la película.
Richard H. Cutting hace el papel de Dick Cutting, Radio Broadcaster (uncredited).
Paul Bradley hace el papel de Gambling Casino Employee (uncredited).
Karl 'Killer' Davis hace el papel de Willard Pearce (uncredited).
Terry Frost hace el papel de Tom, Policeman (uncredited).
Cap Somers hace el papel de Policeman (uncredited).
Tyler McVey interpreta a Police Officer (uncredited) en la película.
Eddie Foster interpreta a Bartender (uncredited) en la película.
Bill Clark interpreta a Policeman (uncredited) en la película.
Chuck Hicks hace el papel de Pilot (uncredited).
Dick Crockett interpreta a Creature Who Calls Camden (uncredited) en la película.
George Bruggeman interpreta a Creature (uncredited) en la película.
Charles Horvath interpreta a Creature (uncredited) en la película.
Boyd 'Red' Morgan interpreta a Creature (uncredited) en la película.
Michael Ross interpreta a Creature Vernon Dunn (uncredited) en la película.
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