Brian Donlevy (Sen. Bill Stephens)
Claire Trevor (Connie Williams)
Forrest Tucker (Charley Pignatalli)
Vera Ralston (Marte Dufour)
Luther Adler (Nicky Mansani)
Sid Tomack (Meyers)
Lee Shumway (US Marshal)
William Schallert (Inquiry Clerk)
Sam Scar (Sporty)
Ric Roman (Fergus)
Richard Reeves (Rollins)
Francis Pierlot (Uncle Jean)
John M. Pickard (Man)
Charles Trowbridge (Commissioner Garrison)
Stanley Waxman (Lonnie)
John Phillips (Radio Commander)
George Volk (Finter)
Sarah Spencer (Mrs. Stephens)
Andy Brennan (Taxi Driver)
Joe Bailey (Eckert of the FBI)
Jack Pennick (Tracey)
Mervin Williams (Floyd, the Servant)
Dick Wessel (Keiller)
Dick Paxton (Elevator Operator)
Don Haggerty (Mark Flynn)
Tony Dante (Tommy)
Elizabeth Flournoy (Miss Adams)
Mikel Conrad (Chunce)
Whit Bissell (Filby)
Eddie Foster (Doorman)
John Halloran (Inspector Willard)
Gil Herman (Officer O'Neil)
Matty Fain (Eddie Fostie)
Thomas Brown Henry (Cmdr. Mermant)
Douglas Kennedy (Brinkley)
Fred Kohler, Jr. (German Soldier)
Paul Livermore (Mike)
Tom Monroe (Rocco)
Sydney Mason (Burns)
Roy Barcroft (Louie Draper)
William Murphy (Pete Dailey)
Richard Jaeckel (Ted Dawson)
Don Beddoe (Sen. Blake)
Roy Roberts (Chief Tayls)
Richard Benedict (Tanner)
Phillip Pine (Louis Barretti)
Damian O'Flynn (Foster)
Pat Flaherty (Mikkelson)
John Russell (Joe Gray)
Gene Lockhart (Sen. Tower)
Grant Withers (Rev. Andrews)
Taylor Holmes (Benjamin Lawton)