The Levante and 'O Galantommo team up against Genny and the Secondigliano bosses who have switched to his side. But Genny has a countermove. Meanwhile, Ciro lets Genny know he's back.

Jack and the team search for a tenacious television reporter after she disappears in the middle of a dangerous, high-profile investigation.

Jack's squad looks for a young, idealistic and dedicated schoolteacher, who disappeared after teaching a night class in the Bronx.

Jessica tries to help a homeless vet get an ID so he can be admitted to the homeless shelter. Sammy's determined to save a dog after he accidentally shot it in the leg.

A boy is found dead in a known gang party house.

Murtaugh and Riggs search for the culprit of a local jewellery heist. Meanwhile, Murtaugh gets called "grandpa" by another parent while at the playground with Harper, sending him into a tizzy, and Riggs deals with withdrawal from drinking.

After the city's gun buy-back programme is robbed, the team is out for those responsible. Meanwhile, Murtaugh walks on thin ice with Trish, Riggs finds an unlikely friend in Ruthie, and Capt. Avery is reunited with a college "frenemy" who has information about the case.

Patrick Jane and the team are called to investigate the robbery and murder of a wealthy jeweller while attending a black tie fundraiser for the CBI.

Jessica tries to help a homeless vet get an ID so he can be admitted to the homeless shelter. Sammy's determined to save a dog after he accidentally shot it in the leg.

A boy is found dead in a known gang party house.

After the city's gun buy-back programme is robbed, the team is out for those responsible. Meanwhile, Murtaugh walks on thin ice with Trish, Riggs finds an unlikely friend in Ruthie, and Capt. Avery is reunited with a college "frenemy" who has information about the case.

Patrick Jane and the team are called to investigate the robbery and murder of a wealthy jeweller while attending a black tie fundraiser for the CBI.

Jessica tries to help a homeless vet get an ID so he can be admitted to the homeless shelter. Sammy's determined to save a dog after he accidentally shot it in the leg.

Jack and the team search for a recently retired U.S. Army officer who disappears following a dinner in his honor given by former members of his Vietnam platoon.

Jack and the team search for a tenacious television reporter after she disappears in the middle of a dangerous, high-profile investigation.

Jack's squad looks for a young, idealistic and dedicated schoolteacher, who disappeared after teaching a night class in the Bronx.

A boy is found dead in a known gang party house.

Torres is haunted by his previous transgressions as Cook takes on a tense undercover assignment.

After the city's gun buy-back programme is robbed, the team is out for those responsible. Meanwhile, Murtaugh walks on thin ice with Trish, Riggs finds an unlikely friend in Ruthie, and Capt. Avery is reunited with a college "frenemy" who has information about the case.

Patrick Jane and the team are called to investigate the robbery and murder of a wealthy jeweller while attending a black tie fundraiser for the CBI.

Jessica tries to help a homeless vet get an ID so he can be admitted to the homeless shelter. Sammy's determined to save a dog after he accidentally shot it in the leg.

Several old cases come up for review, including one Provenza closed years ago with his former partner, Detective Andrews.

Chicago P.D. steps up Goodwin’s security after she’s threatened online by a former employee. Archer and Frost treat victims from a disciplinary camp injured during a rockslide. Maggie gets roped into delivering a high schooler’s baby.

Ripley and Frost uncover shocking information that conflicts with their patient’s DNR. Hannah facilitates an unexpected reunion. The tension between Archer and Lenox comes to a head.

As Jen remains firmly in the peripheries of Jack and Tasha's family life, Tasha spirals into paranoia as she comes to believe that, rather than her husband, Jen is actually after her daughter.

Elliot seeks help from an unlikely ally to secure his escape from the island. Meanwhile, Helen gets acquainted with some threatening figures as she continues to track Elliot down.

While Jane and the team examine the crime scene where a baseball scout is found murdered, Jane is clocked in the head by a ball and flashes back to his childhood with his overbearing father.

Ripley and Frost uncover shocking information that conflicts with their patient’s DNR. Hannah facilitates an unexpected reunion. The tension between Archer and Lenox comes to a head.

Ciro, Enzo and the others are looking for new allies and Genny jumps at the chance to infiltrate the enemy's ranks with one of his own. Meanwhile, Nunzia tries to avenge her husband's death.

Ciro and the others hide away in Forcella, but must quickly find a safer place and a new ally. Genny has put a price on their heads - so time is running out.