"A federal agent infiltrates a crime syndicate."
Howard Duff
as George Morton
Shelley Winters
as Terry
Dan Duryea
as Johnny Evans
Tony Curtis
as Joey Hyatt
John McIntire
as Nick Avery
Gar Moore
as Sam Harrison
Leif Erickson
as Pringle
Barry Kelley
as William McCandles
Hugh Reilly
as Charlie
Wally Maher
as T.H. Benson
Patricia Alphin
as McCandle's Secretary (uncredited)
Gregg Barton
as Treasury Man (uncredited)
Mary Bayless
as Ranch Guest (uncredited)
Eumenio Blanco
as Pallbearer (uncredited)
Tex Brodus
as Nightclub Patron (uncredited)
James Conaty
as Courtroom Spectator (uncredited)
Oliver Cross
Dulcie Day
as Train Passenger (uncredited)
Pilar Del Rey
as Mexican Girl (uncredited)
Leslie Denison
as Canadian Undercover Man (uncredited)
Watson Downs
as Watchman (uncredited)
Charles Drake
as Hotel Clerk (uncredited)
Harry Evans
as Federal Judge (uncredited)
Al Ferguson
as Porter (uncredited)
Sam Finn
George Ford
as Joe - The Bartender (uncredited)
Alan Foster
as Informer (uncredited)
Robert Foulk
as Pete (uncredited)
Nacho Galindo
as Señor Martinez (uncredited)
Chuck Hamilton
as Prison Guard (uncredited)
Edwin Max
as Pete Carter (uncredited)
Kenneth Patterson
as Ray Dallas (uncredited)
William Castle
Director
Henry Jordan
Story
Robert L. Richards
Screenplay
Aaron Rosenberg
Producer
Maury Gertsman
Director of Photography
Ted J. Kent
Editor
Bernard Herzbrun
Art Direction
Emrich Nicholson
John P. Austin
Set Decoration
Russell A. Gausman
Orry-Kelly
Costume Design
Joan St. Oegger
Hairstylist
Bud Westmore
Makeup Artist
Leslie I. Carey
Sound
Richard DeWeese
David S. Horsley
Visual Effects
Connie Earl
Script Supervisor
Frederick Herbert
Music
Miklós Rózsa
Hans J. Salter
Arnold Schwarzwald
Milton Schwarzwald
Music Director
Frank Skinner
Leith Stevens
Glenn Adams
Still Photographer
Harry Davis
Camera Operator
Special Effects
Marshall Green
Assistant Director
Jesse Hibbs
Gordon McLean
Dewey Starkey
Production Manager
Original Music Composer
