Chicago P.D. cast, then and now: See how the stars have changed over 14 seasons

Several original figures have stayed mainstays through the run. Jason Beghe remains a central presence as Hank Voight, anchoring the series across seasons. Other long-running characters include Marina Squerciati as Kim Burgess and Tracy Spiridakos as H. It’s the supporting roles that changed more dramatically over time.

Sofia Bush exited Chicago P.D. after Season 14’s earlier chapters of the show’s timeline, leaving Erin Lindsay behind as the story evolved. Her departure is often discussed as a creative and behind-the-scenes decision rather than a sudden in-story twist. Fans commonly ask whether her exit affected the show’s direction—largely, it opened room for new dynamics and character arcs.

Jesse Lee Soffer left the series after a long run as Detective Jay Halstead. His departure didn’t mean the show stopped developing the Intelligence Unit’s cases; instead, Chicago P.D. reshuffled relationships and spotlighted other detectives. Rather than a single replacement, the series gradually leaned more heavily on remaining regulars and newer additions.

As the series progressed, Chicago P.D. introduced fresh regulars to keep the team balanced and the story moving. These additions helped maintain a mix of veteran leadership and newer perspectives. Depending on the season you’re looking at, the “then and now” cast list will include actors who became core members only after earlier characters exited or shifted roles.

Chicago P.D. didn’t reinvent its premise, but changes in casting often shift on-screen chemistry, priorities, and how the writers balance character-focused drama with case-of-the-week storytelling. When a lead detective leaves, the remaining characters can become more central or take on new leadership responsibilities, which can subtly change the series’ emotional tone and pacing.

Start by listing the main characters credited as regulars for that season, then compare them to the current ensemble. A fast method is to match names to their roles (for example, leadership, partners, and intelligence unit members) and note which characters left or were promoted. This approach avoids confusion caused by recurring guest appearances.