Ben deals with John's escalating drug problem as Sammy prepares for fatherhood. Lydia embraces a teenage victim and fights her emotions during a high-octane shootout.

On Ben Sherman's final day as a rookie, challenges abound -- none more daunting than how to handle his partner's growing reliance on painkillers.

Michael questions Nikita's commitment to a life beyond Division's web -- and he's not the only one with doubts.

Brenda probes the murder of a young woman at a restaurant.

Provenza and Flynn find a dead body in Provenza's garage.

Rigsby and Van Pelt go undercover as a couple with relationship problems to investigate the death of a woman who received advice from a radio love doctor.

Michael questions Nikita's commitment to a life beyond Division's web -- and he's not the only one with doubts.

With the help of an old academy buddy, Stabler goes rogue in the hunt for Emery; using OCCB allies when he can, Stabler must face the truth behind revenge, with one last assist from Joe.

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.

Provenza and Flynn find a dead body in Provenza's garage.

Rigsby and Van Pelt go undercover as a couple with relationship problems to investigate the death of a woman who received advice from a radio love doctor.

Michael questions Nikita's commitment to a life beyond Division's web -- and he's not the only one with doubts.

Sammy seeks answers in the desert. Lydia and Josie babysit an important alcoholic witness before a murder trial. And John and Ben go against procedure to help a child in need.

Ben deals with John's escalating drug problem as Sammy prepares for fatherhood. Lydia embraces a teenage victim and fights her emotions during a high-octane shootout.

On Ben Sherman's final day as a rookie, challenges abound -- none more daunting than how to handle his partner's growing reliance on painkillers.

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.

With the help of an old academy buddy, Stabler goes rogue in the hunt for Emery; using OCCB allies when he can, Stabler must face the truth behind revenge, with one last assist from Joe.

Provenza and Flynn find a dead body in Provenza's garage.

Rigsby and Van Pelt go undercover as a couple with relationship problems to investigate the death of a woman who received advice from a radio love doctor.

Michael questions Nikita's commitment to a life beyond Division's web -- and he's not the only one with doubts.

TikTok star Sania Khan went viral campaigning for independence not knowing she risked deadly revenge.

With the crew stretched thin, a performance efficiency expert evaluates Firehouse 51. Kidd and Severide bond with the mother of the baby they hope to adopt.

Kidd strengthens her bond with Natalie during a road trip. Severide investigates a car fire and uncovers surprising evidence. Violet receives a career opportunity after being featured in a local newspaper.

Cindy leads Gene on a mission to evade police suspicion and reminds him of the potential in Tony's land. But can they keep their dream secret from the Lords, who arrive in Spain and have questions they want answered?

After a key witness in the Cindy Strauss murder case turns up dead, Terry and Hildy set out to find the truth before it undermines the prosecution's case.

J.J. LaRoche personally requests Jane's help when the mysterious container he's been hiding for nine years is stolen from his home.

Kidd strengthens her bond with Natalie during a road trip. Severide investigates a car fire and uncovers surprising evidence. Violet receives a career opportunity after being featured in a local newspaper.