Dermot Mulroney Announces Exit from NBC's 'Chicago Fire' After Two Seasons

Actor Dermot Mulroney confirmed at the Flashback Weekend Chicago Horror Convention that he will leave the NBC drama "Chicago Fire" after appearing in a single episode of its upcoming 15th season. He said the character will be written off and expressed that it is "bitter to have to leave" a show he loved, noting the demanding storylines he tackled during his two‑season run that began with season 13.

Mulroney also mentioned other cast changes, noting that longtime actor Joe Miñoso will depart after wrapping up his role, while newcomer Da'Vinchi joins as firefighter candidate Marcus Burke. Season 15 is slated to premiere in October, with earlier seasons available on Peacock.