Director Sidney Lumet flourishing on his home turf and in his generic speciality, the New York police thriller. Clocking in at 167 minutes, scripted by Lumet regular Jay Presson Allen, and starring Treat Williams as a corrupt narcotics cop turned informer, this movie swims freely in the moral ambiguities Lumet seems to thrive on; the secondary cast—Jerry Orbach, Richard Foronjy, Don Billett, Kenny Marino, Carmine Caridi, Lindsay Crouse, and Bob Balaban—help hold one’s interest. (1981).