Mayor of Kingstown Season 4 Finale Airs on Paramount

The season four finale of "Mayor of Kingstown" aired on Paramount on December 28, 2025, delivering a climactic resolution to the gritty crime drama's latest chapter while leaving viewers anticipating news on a potential fifth season. The episode, titled "Belly of the Beast," wrapped up the 10-episode run that premiered on October 26, centering on the McLusky brothers' efforts to navigate escalating violence in the fictional town of Kingstown, Michigan.

In the finale, Mike McLusky, played by Jeremy Renner, and his brother Kyle, portrayed by Taylor Handley, face a deadly ambush at a diner by associates of the season's antagonist, Merle Callahan, an escaped prisoner responsible for significant turmoil. The brothers, along with allies Ian and Stevie, capture and interrogate one of the attackers, uncovering Callahan's location. Parallel events unfold inside Anchor Bay Prison, where a lockdown ends and sparks a brawl between rival gangs, the Crips and Colombians. Callahan eventually surrenders at the police station but meets a fatal end at the hands of Kyle during a confrontation at the train tracks, avenging the murder of Kyle's wife, Tracy, earlier in the season.