The Custodian (1994)

He lies, he cheats, he bends the rules, he's the last of the honest cops, he is The Custodian

Detective James Quinlan has left his alcoholic wife, sprouting a bloom of insecurity, anger and self-motivation within him to expose the corrupt police force that surrounds him. He abandons his straight life to join his partner Detective Church in order to get on the inside of the circle of double-agents. He secretly sides with a reporter and an Internal Affairs lawyer to expose them to the press.