Riker (1981)

Frank Riker is a cop who gets the job done but unfortunately, causes a lot of damage to do it. After 11 years, the city thinks that it has had enough of Frank Riker. He faces the possibility of being dismissed or being assigned a desk job, his old friend, Brice Landis, who works for the Attorney General, offers him a proposal; resign from the force and work for him. Frank accepts. So he goes out after criminals under the guise of being a busted cop.