The Big Easy (1986) on Netflix

McSwain reckons he's an honest cop, though he's happy to go along with the kickbacks from the precinct 'Widows and Orphans Fund'. When it comes to murder he's definitely on the right side and is irritated to find his latest investigation being followed by Anne Osborne from the D.A.'s office. Out of work they hit it off pretty quickly, making it difficult for Anne to handle when his more questionable activities come to light and she has to prosecute him. In turn McSwain starts to suspect that he's investigating something more than mob slayings.