The Updated Chicago PD Cast: Who’s In, Who’s Out, And Season 12’s Shocking New Detective

The Intelligence Unit has undergone one of its most significant shake-ups in years, and as of today, December 10, 2025, fans are still reeling from the dramatic conclusion of Season 12 and the official cast roster for the next chapter. The police procedural drama, a cornerstone of the *One Chicago* franchise, continues to thrive by putting its core characters through intense, emotionally charged storylines that constantly test the boundaries of law and justice. The latest season introduced a new face to the 21st District and saw a long-time fan-favorite finally earn a well-deserved promotion, fundamentally changing the team's dynamic under the ever-watchful eye of Sergeant Hank Voight.

This comprehensive guide breaks down the full main cast list, provides a complete biography for each star, and dives deep into the major character developments, including a surprising new series regular and the monumental shift in the Kim Burgess and Adam Ruzek storyline. The show's commitment to exploring complex social issues and the personal toll of police work ensures that the *Chicago PD* cast remains one of the most compelling ensembles on television.

The Intelligence Unit: Complete Main Cast Biography and Roles

The core of *Chicago P.D.* lies in the unwavering commitment of the Intelligence Unit, led by a group of veteran actors who have defined their characters over more than a decade. Their on-screen chemistry and individual arcs provide the topical authority that keeps viewers engaged season after season. Below is the essential list of the current main cast members for Season 12 and beyond.

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• Jason Beghe as Sergeant Hank Voight

Role: The tough, morally ambiguous leader of the Intelligence Unit. Voight often operates outside the lines of the law, driven by a fierce, protective loyalty to his team. His arc in Season 12 focused heavily on his moral code being tested after a brutal attack. Biography: Born March 12, 1960, Jason Beghe is an American actor who originated the role of Voight as a villain on *Chicago Fire* before moving to *P.D.*. His notable past work includes roles in films like *Thelma & Louise* and television appearances on shows such as *Picket Fences* and *Melrose Place*.

• Patrick John Flueger as Officer Adam Ruzek

Role: A patrol officer turned Intelligence detective, Ruzek's journey is marked by impulsiveness and emotional depth. Season 12 saw him continue his recovery and commitment to his family life with Burgess. Biography: Born December 10, 1983, Patrick John Flueger is known for his principal role as Shawn Farrell in the sci-fi series *The 4400* before joining *One Chicago*. He also appeared in the film *The Princess Diaries* (2001).

• Marina Squerciati as Detective Kim Burgess

Role: Starting as a patrol officer with an ambition for Intelligence, Burgess has evolved into one of the show's most resilient characters. Her Season 12 arc culminated in a major career milestone. Biography: Marina Squerciati is an American actress who gained attention for recurring roles on *Gossip Girl* and as the Russian spy Irina in *The Americans*. She also appeared in the film *Frances Ha*.

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• LaRoyce Hawkins as Officer Kevin Atwater

Role: A dedicated, thoughtful officer who consistently strives to do the right thing and bridge the gap between the police and the Chicago community. Atwater's Season 12 storyline teased a personal secret and a complex relationship with Voight. Biography: Born May 4, 1988, LaRoyce Hawkins is a Chicago-born actor, stand-up comedian, and spoken-word artist. Prior to *P.D.*, he had a supporting role in the football drama film *The Express*.

• Benjamin Levy Aguilar as Officer Dante Torres

Role: The newest full-time member of the Intelligence Unit, Torres is a former gang member turned dedicated officer whose past often complicates his present cases. His Season 12 arc involved him cutting a significant personal tie. Biography: Benjamin Levy Aguilar is a Guatemalan actor, best known for his role as Antonio Rivera in the series *Filthy Rich* before joining *Chicago P.D.* Interestingly, he first guest-starred on *P.D.* in Season 7 as a different character, Franco Chavaro.

• Amy Morton as Desk Sergeant Trudy Platt

Role: The no-nonsense, dry-witted Desk Sergeant who serves as the gatekeeper and moral compass of the 21st District. Biography: Born April 3, 1959, Amy Morton is a veteran American actress, director, and artistic associate of the Steppenwolf Theatre. Her notable stage work includes originating roles on Broadway in *One Flew Over the Cuckoo's Nest* and receiving Tony Award nominations for *August: Osage County* and *Who's Afraid of Virginia Woolf*.

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The Major Shift: Kim Burgess’s Promotion and the Upton Exit Aftermath

Season 12 of *Chicago P.D.* was a period of both emotional closure and exciting new beginnings, particularly for the women of the Intelligence Unit. The long-anticipated departure of Detective Hailey Upton (played by Tracy Spiridakos) in Season 11 left a massive void in the team, both personally and professionally. Upton’s exit, which followed a significant final storyline with Voight, was a turning point that necessitated a new hierarchy within the unit.

The most significant development to fill this void was the long-overdue promotion of Kim Burgess to Detective. This character arc has been one of the show’s most compelling, starting with Burgess as a determined patrol officer and following her through intense personal trauma, motherhood, and her on-again, off-again relationship with Adam Ruzek. Her new title not only validates her years of hard work and sacrifice but also shifts the balance of power within the Intelligence Unit. This promotion has been a major point of discussion among *One Chicago* fans, who see it as a necessary evolution for the character. It also sets the stage for a new dynamic with Ruzek, as the couple navigates a work environment where they are now both Detectives, adding a layer of professional complexity to their already complicated personal life, which included a highly anticipated wedding.

Meanwhile, Voight’s leadership style faced renewed scrutiny in the wake of Upton’s departure, as he grappled with a deep-seated loss. The Sergeant found himself in a vulnerable position after being brutally beaten in a Season 12 episode, forcing him to rely on his team—and his own dark methods—to bounce back. The writers also teased a potential new love interest for Voight, a surprising development that could soften the edges of the hardened Sergeant and provide a fresh emotional storyline for the character.

New Faces and Future Storylines: Officer Kiana Cook and Character Arcs

To inject fresh energy and new perspectives into the Intelligence Unit, *Chicago P.D.* introduced a new series regular in Season 12: Officer Kiana Cook, played by actress Toya Turner. Turner, known for her role in *Warrior Nun* and as a recurring nurse on *New Amsterdam*, is no stranger to intense drama. Her character, Officer Cook, joined the unit, instantly becoming a major part of the show's storylines and promising to bring a new dynamic to the team, especially as the Intelligence Unit continues to evolve post-Upton.

The addition of Officer Cook and the promotion of Burgess are strategic moves by the showrunners to refresh the ensemble cast and explore new topical issues. The show has always excelled at giving its characters compelling personal journeys, and Season 12 continued this tradition with the returning cast:

• Adam Ruzek and Kim Burgess: The "Burzek" relationship was a central focus, culminating in a wedding storyline that brought much-needed emotional resolution to their long, tumultuous history. Their new dynamic as Detective and Officer/Detective provides a rich new layer of professional and personal challenges.
• Kevin Atwater: Officer Atwater had a major storyline in the latter half of Season 12 that highlighted his personal integrity and his complicated relationship with honesty. The narrative focused on a secret Atwater was keeping, which created tension with Voight and prompted Ruzek and Burgess to urge him to confide in them. This arc continues Atwater’s journey of ethical policing.
• Dante Torres: The young Intelligence officer, who has been working hard to escape his troubled past, made a significant move in his personal life by cutting ties with Gloria Perez. This decision suggests a focus on Torres fully committing to his new life and career, leaving behind the shadows of his old neighborhood.

The *Chicago P.D.* cast remains a powerhouse ensemble, expertly balancing high-stakes police work with deep, personal character exploration. With a new Detective, a fresh face in the unit, and the core team facing new challenges, the series is set for more dramatic and compelling storytelling in its upcoming seasons, ensuring the *One Chicago* universe stays vibrant and relevant.