The team plunged into the investigation the moment a confidential informant fell victim to murder, determined to unmask the killer. But as they pursued the trail, they unearthed a truth so startling it cast a shadow over everything. Meanwhi…

Officer Kim Burgess battles for survival as her colleagues race against time to locate her captor. Deputy Superintendent Sam Miller is consumed by the urgent need to find his son's murderer. Voight and Upton grapple with the consequences of…

The ghosts of Halstead's history rise with alarming clarity when a former comrade from the Army becomes entangled in a fatal explosion. Meanwhile, with the FBI opening an inquiry into Roy's vanishing, Upton finds herself increasingly burden…

Responding to an emergency call at a derelict house, Upton and Ruzek find themselves drawn into a troubling investigation that leads them toward unsettling truths.

While the team investigates a fatal shooting in Burnside, Atwater begins to understand a deeply personal link to the unfolding tragedy.

Ruzek reconnects with a former associate, drawn into a mission to dismantle a criminal enterprise. However, inconsistencies begin to surface, prompting Voight and Burgess to launch an independent inquiry.

While the team systematically dismantled a drug network, Voight cultivated a cautious rapport with a newly acquired informant. Yet, a subtle unease began to surface, hinting that she harbored objectives distinct from his own.

The team's inquiry into the stabbing of a father and his two young daughters quickly suggests a deeper complexity than initially apparent. As the FBI investigation into Roy Walton’s death gains momentum, the pressure mounts on Voight, Upton…

As the FBI tightened its grip on the Roy Walton case, Voight and Halstead plotted a course to navigate the escalating pressure. Their focus shifted when a city bus driver was shot by a passenger, prompting an investigation into a potential …

The team’s search for a missing child quickly unravels into a far more intricate affair. Burgess and Ruzek are unprepared for the revelation that a figure from the missing girl's history has emerged.

Voight turns to his latest informant in the intricate investigation of a drug trafficking operation. Meanwhile, Atwater, wrestling with the familiar discord between his personal and professional worlds, arrives at a resolution.

The team collaborated, determined to uncover the leader of the ruthless Los Temidos gang. Meanwhile, Voight delved into the history of his informant, Anna Avalos, as her undercover assignment faced increasing peril.

During a run, Upton witnesses a devastating car accident and, without hesitation, puts herself in danger to rescue the occupants. As they gather details about the survivors, the team finds itself compelled to hunt down the driver responsib…

The team hunts a ruthless killer, one who leaves a distinct mark on each crime scene. Meanwhile, Burgess and Ruzek redouble their efforts to secure the custody of Makayla.

The team races against time, desperately seeking a comrade lost to perilous circumstances.

The shooting of a young man near the Cárabo Bakery prompts an investigation that quickly focuses on Javier Escano, the bakery's owner, already a subject of surveillance. As the situation escalates, Voight facilitates closer contact between …

A search for the daughter of a longtime family friend draws the team into a complex drug investigation. Meanwhile, Burgess and Ruzek grapple with the lingering emotional impact of Makayla’s abduction, finding it difficult to move forward.

During an investigation, Halstead takes a fresh recruit under his guidance. The relationship proves fraught with difficulty, however, and the recruit’s shadowed history casts a long pall over their partnership.

Following the death of a prominent Chicago businessman, Atwater and his team begin a thorough investigation, sensing that the circumstances surrounding the crime are far more complex than they initially appear.

Voight and his team reopen a long-dormant investigation, hoping to unearth clues that might illuminate a disturbing recent crime. The case, with its deep exploration of forgotten experiences, stirs unease in both Burgess and Ruzek regarding…

With Javier Escano, the drug kingpin, within reach, Voight finds himself compelled to deceive his undercover informant, Anna, in order to maintain her focus. This erosion of trust casts a growing shadow over their already fragile operation.

The blast reverberated through the case, sending the team into a frantic rush as they closed in on Escano, each member teetering on the edge of exhaustion.