Mayor of Kingstown will return. The Paramount+ show was co-created by Hugh Dillon and Taylor Sheridan (who had previously collaborated as actor and co-creator on the Paramount Network's hit neo-Western series Yellowstone) and follows the turmoil in a town that is heavily involved in the prison industry. Although their involvement in Mayor of Kingstown season 4 is unknown, so far the main cast of the first three seasons has included Jeremy Renner, Tobi Bamtefa, Hamish Allan-Headley, Taylor Handley, and Derek Webster, along with Dillon himself, playing detective Ian Ferguson. Per Paramount+, Mayor of Kingstown has officially been renewed for season 4 at Paramount+. This news comes roughly two months after the writers room for the new season was opened in October, which in turn happened about two months after the season 3 finale aired on August 4. At the time of writing, cast and story details remain tightly under wraps, though it seems highly likely that Dillon and Renner will both return, as the latter is an executive producer alongside Dillon and Sheridan.