Jack and his squad search for a teenage girl, Clare Metcalf, who disappears from a mental hospital after she suffers an extreme psychotic episode

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.

Bearing a grudge, Sammy leaves a gang territory unattended, only to have a violent gang war erupt throughout the city.

A deranged shooter attacks a family Thanksgiving dinner, leaving four dead and even more wounded. This horrific crime sets off a massive holiday-season manhunt to catch the killer – before they can strike again.

Murtaugh and Riggs respond to the murder of an escaped patient of Dr. Cahill's who mysteriously goes off the rails. The investigation brings to light a hidden scheme far bigger than they imagined. Meanwhile, Riggs' anger gets the better of him once again.

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.

The CBI team is faced with a violent and shocking crime in their own office, but must work the case in spite of their alarm of who may be behind it. Meanwhile, Rigsby and Van Pelt are definitely an "item".

Bearing a grudge, Sammy leaves a gang territory unattended, only to have a violent gang war erupt throughout the city.

Pascal and Severide revisit the storage facility fire in hopes of uncovering new evidence. Cruz helps Mouch take his studying to the next level.

A deranged shooter attacks a family Thanksgiving dinner, leaving four dead and even more wounded. This horrific crime sets off a massive holiday-season manhunt to catch the killer – before they can strike again.

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.

The CBI team is faced with a violent and shocking crime in their own office, but must work the case in spite of their alarm of who may be behind it. Meanwhile, Rigsby and Van Pelt are definitely an "item".

Bearing a grudge, Sammy leaves a gang territory unattended, only to have a violent gang war erupt throughout the city.

Jack and his squad investigate a bride, Audrey Rose, who disappears from her wedding celebration.

Jack and his squad search for a teenage girl, Clare Metcalf, who disappears from a mental hospital after she suffers an extreme psychotic episode

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.

A deranged shooter attacks a family Thanksgiving dinner, leaving four dead and even more wounded. This horrific crime sets off a massive holiday-season manhunt to catch the killer – before they can strike again.

Pascal and Severide revisit the storage facility fire in hopes of uncovering new evidence. Cruz helps Mouch take his studying to the next level.

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.

The CBI team is faced with a violent and shocking crime in their own office, but must work the case in spite of their alarm of who may be behind it. Meanwhile, Rigsby and Van Pelt are definitely an "item".

Bearing a grudge, Sammy leaves a gang territory unattended, only to have a violent gang war erupt throughout the city.

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

Burgess is put to the test as she looks to make an advancement in her career.

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

Emma's return to Minnesota goes to the core of her being. Her secret protected by Esther is her daughter, Freya, being raised by foster parents. Power shifts further to John when Mary discovers his past. Rose finds the truth about Emma and John finally tracks his prey.

Emma determines to start her life again; to be the mother her daughter deserves. Mary and John face their own exiles and despite her horror at John's nature she is locked in his power game and must continue her connection in the hope it leads to the truth about Theresa.