Johnny Stool Pigeon

Johnny Stool Pigeon is a 1949 blackandwhite film noir directed by William Castle, and starring, Howard Duff, Shelley Winters and Dan Duryea.

A narcotics agent convinces a convict he helped send to Alcatraz go undercover with him to help expose a heroin drug smuggling ring. The unlikely pair travels from San Francisco to Vancouver and finally to a dude ranch in Tucson which is run by mob bosses. They end up getting help breaking the case from the gang leaders dingy blonde girlfriend Winters, who falls for the narcotics agent during the sting.When the film was released, the film critic for The New York Times, gave the film a tepid review, writing, Despite a serious attempt at authenticity it is merely a brisk copsandsmugglers melodrama, which follows an obvious pattern and is fairly strong on suspense and short on originality and impressive histrionics ... Howard Duff, who has had plenty of experience as a gumshoe both on the radio and in films, is appropriately selfeffacing, hard and handsome as the intrepid agent. Dan Duryea adds a surprising twist to his usual characterizations of tough hombres as the convict who turns on his own kind, and Shelley Winters gives a credible performance as the blonde moll who also gives the law a muchneeded assist. But aside from a few variations their crime and punishment adventures are cast in a familiar mold. ........

Source: Wikipedia