The aftermath of Voight's near-fatal experience had barely settled when Intelligence found itself inundated with cases. A major drug operation had been uncovered, demanding their immediate and full attention.

Following a devastating blow, the Intelligence unit pressed onward, caught in the frantic current of a city-wide pursuit.

Atwater finds himself navigating a precarious equilibrium as he collaborates with a forensic psychologist on a case of armed robbery.

Assistant State's Attorney Chapman collaborates with Intelligence on a delicate investigation, one that stirs up difficult recollections for Voight.

As a fierce rain lashed against the city, Intelligence offered assistance to Officer Cook, who found herself at odds with her partner regarding a case.

The demands on Burgess intensify as she strives for professional advancement.

The weight of past misdeeds presses down on Torres as Cook undertakes a delicate, high-stakes undercover operation.

As Deputy Chief Charlie Reid shifts the department's attention to intelligence, the unit uncovers a truth about a secret Torres has long concealed.

When bureaucratic hurdles impede the progress of a kidnapping investigation, Cook finds herself relying on the support of her family.

A sudden arrival throws Ruzek and Burgess off course, complicating their already emotionally charged investigation into the case of an unidentified young girl.

As the suspects remain at large and conditions deteriorate deeper within the tunnels, emergency responders rush to reach the trapped victims, while the investigation into those responsible gains momentum. The crossover event begins in Ch…

A chilling revelation forces Intelligence to take action, compelling Torres to return to the world he knew as a teenager: the harsh reality within the juvenile detention center.

The escalating conflict on the streets imperils Atwater's efforts to establish the community center.

Ruzek wrestled with the decline of his father's health, a private struggle mirroring the relentless pursuit of a phantom killer by Intelligence.

Voight harbors doubts about Deputy Chief Reid’s rationale for implementing a Violence Reduction Initiative in a district deeply fractured by gang warfare over territory.

The events at the diner, tragically violent, demand a sharp reckoning with Burgess’s memory.

The pursuit of a suspect in the shooting revealed an unexpected link to Atwater and Val, prompting speculation about the nature of their relationship.

Working in concert, Voight and Chapman begin to expose Deputy Chief Reid's clandestine activities, particularly when he assigns an Intelligence task to a seemingly routine carjacking incident.

For the first time in his career, Cook collaborated with a confidential informant on a robbery-murder investigation that implicated a prominent college athlete.

On a slick, icy bridge, Ruzek witnesses a devastating accident. The incident draws Intelligence into a disturbing case, one that quickly reveals itself to be a deeply sinister network of sex trafficking.

The confrontation with Deputy Chief Reid grew sharper as Intelligence focused its attention on Otero.

With the Intelligence unit suspended pending an internal affairs investigation, its members operate outside established protocols, determined to finally dismantle Reid's power. Amidst this turmoil, Ruzek and Burgess grapple with the unsettl…