Dermot Mulroney is leaving Chicago Fire after two seasons on the show, with his character wrapping up in the upcoming Season 15. While attending Flashback Weekend Chicago Horror Convention, Mulroney gave his first reaction after news of his exit from the NBC series. Mulroney acknowledged the “incredible cast” he worked with and noted that they gave him “incredibly challenging scenes” throughout his time on the show. On Friday, July 31, Deadline reported that Mulroney was saying goodbye to Chicago Fire. Mulroney went on hiatus for the latter half of Season 14, returning in the finale.