Sledge Hammer! (1986)

S1E16 The Color of Hammer

When Hammer's preferred judge throws out charges against a local gangster, Hammer decides to dig deeper. Soon after, the judge is discovered dead, leaving behind a single clue that points to a questionable pool hall. To get to the bottom of it, Sledge goes undercover as a pool hustler to track down the extortionist who's been threatening city officials.