Schedule

When the crushed body of a young teen who ran away from a treatment center for troubled girls is found in an abandoned building, Voight sends Halstead under cover as a guard to investigate the center from the inside.

The team investigates a home explosion that left a charred body, one injured survivor and no witnesses; Lindsay and Halstead receive a strange warning about Rixton.

Olinsky goes under cover as a hit man for hire after Lindsay is tipped off about a grieving father looking to avenge his daughter's death; when Ruzek returns from his undercover assignment, Voight puts him on patrol duty.

Olinsky's daughter is in critical condition following a massive warehouse fire; Voight investigates the fire's potential origins; intelligence examines connections between the building owner, those who were inside, and potential arson suspects.

The investigation leads Intelligence to one of Chicago's wealthiest families after a nighttime photographer is murdered over a piece of mysterious footage; Burgess' sister Nicole visits the district and presents an icy attitude toward Ruzek.

When Burgess realizes that her sister, Nicole, never made it home after a night out with friends, the members of the intelligence team make finding Nicole their top priority.

A patrol officer becomes a suspect when a van explodes during a Chicago street festival; Burgess, who helped train the officer, is desperate to prove his innocence.

A meth lab bust uncovers a scam in which children adopted from foreign countries are abandoned, then sold online; Atwater struggles with decisions about moving his siblings to a safer environment.

A family is killed, and the team searches for a drug dealer with a likely connection; Voight asks Vice Sgt. Sean McGrady for help.

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

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; Voight discovers who's been leaking information from the 21st.

Halstead puts his career on the line to help solve a case with ties to his new girlfriend; Voight finally discovers the mole in his unit.

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

The team works with a visiting detective to put an end to a gang's brutal tactics; Antonio learns that the detective has a hidden motive for being in Chicago; Voight learns that the body of his son's killer has been found.