Chicago P.D.

When a young bystander is shot during a difficult operation, the top brass question Halstead's involvement.

A Chicago police officer becomes a suspect in a deadly terrorist attack.

An investigation into the murder of an illegal immigrant is plagued with roadblocks as Intelligence contends with the perception of the police among the city's immigrant population.

While investigating a drug-related homicide, Intelligence is stonewalled by the 'no-snitch' culture of the neighborhood. And Atwater discovers a personal connection to the case. Meanwhile, the police's own code of silence is put to the test when Upton is asked about Ruzek's rough altercation with a suspect.

When Intelligence busts a meth lab run by gang leader Marshall Carter, they uncover a re-homing scam in which children adopted from foreign countries are abandoned, then sold online. Meanwhile, Atwater struggles with the difficult decision about whether to move his siblings Jordan and Vinessa to a safer environment outside of Chicago.

Upton must work with a vice cop she dislikes to help intelligence crack a drug related murder.

Halstead goes undercover to stop an ex-military kidnapping crew from killing an innocent child.

Intelligence investigates a twisted case involving a congressman caught with a dead girl.

The death of Judge Tommy Wells' daughter puts Intelligence on the track of a pill mill spreading into the suburbs of Chicago and the doctor enabling it. Meanwhile, Voight discovers who's been leaking information from the 21st.

Halstead puts his credibility and career on the line to help solve a case with ties to his new girlfriend.

Burgess works with her first criminal informant to track down a ruthless pimp and break up his prostitution ring.

When Atwater disappears at the house of a convicted felon, the evidence doesn't look promising - with his belongings and his blood left behind. Intelligence rallies to rescue him before it's too late. And Atwater struggles for survival faced with not only his captor but also a difficult connection to his past.

When a gang from El Salvador infiltrates Chicago, Intelligence works with a visiting detective to put an end to the crew's brutal tactics.

Intelligence investigates the death of a college athlete killed after kneeling in protest.

Intelligence tracks down a vigilante killing rapists. The investigation hits home for Burgess (Marina Squerciati), who begins to question if the men who attacked her sister truly paid for their actions.

Intelligence enlists Firehouse 51 to help prevent the latest in a series of bombings targeting the media.

A prominent Alderman known for his urban revitalization efforts is murdered; Olinsky receives an ultimatum from Woods.

Upton resumes an undercover identity to take down a meth ring run by a former criminal contact; Voight calls in a favor for Olinsky when pressure from Woods mounts.

A string of stash house robberies lead back to an unlikely individual.

After Voight (Jason Beghe) witnesses the kidnapping of a young woman with a mysterious connection to his past, Intelligence works to find a connection between her kidnapping and several bank robberies.

Halstead (Jesse Lee Soffer) and Atwater (LaRoyce Hawkins) go undercover to prevent military grade weapons from hitting the street.

Tensions run high as Intelligence seeks justice for Olinsky (Elias Koteas) after he's stabbed in prison.