Hard (1999)

Cop Raymond Vates is gay, though closeted. When a serial killer begins murdering male hustlers, Vates investigates despite official indifference. His professional interest becomes personal though when he unknowingly has a one-night stand with the killer, who steals his badge and uses it to implicate him in the crimes. Vates is forced to come out at work in order to clear his name, and must track down the killer before he becomes the next target.