Jules Dassin	...	(Réalisateur)
Malvin Wald, Albert Maltz	...	(Scénariste)
Barry Fitzgerald	...	Det. Lt. Dan Muldoon
Howard Duff	...	Frank Niles
Dorothy Hart	...	Ruth Morrison
Don Taylor	...	Det. Jimmy Halloran
Frank Conroy	...	Capt. Donahue
Ted de Corsia	...	Willie Garzah aka Willie the Harmonica
House Jameson	...	Dr. Stoneman
Anne Sargent	...	Mrs. Jane Halloran
Adelaide Klein	...	Mrs. Paula Batory
Grover Burgess	...	Mr. Batory
Tom Pedi	...	Det. Perelli
Enid Markey	...	Mrs. Edgar Hylton
Mark Hellinger	...	Narrator

Résumé: Amid a semi-documentary portrait of New York and its people, Jean Dexter, an attractive blonde model, is murdered in her apartment. Homicide detectives Dan Muldoon and Jimmy Halloran investigate. Suspicion falls on various shifty characters who all prove to have some connection with a string of apartment burglaries. Then a burglar is found dead who once had an elusive partner named Willie. The climax is a very rapid manhunt sequence. Filmed entirely on location in New York City.