Most of the current Chicago P.D. cast in the fall 2025 TV schedule has been around from the very beginning, but one star will be stepping away from the One Chicago cop drama. Patrick John Flueger, who has been playing Officer Adam Ruzek since the pilot in 2014, is taking a leave of absence, which requires some changes behind the scenes, as well as presumably within the on-screen Intelligence Unit in the current 13th season.
