Desperate circumstances call for desperate measures, as Jake, Holt, Amy, Terry, Rosa and Charles must ally themselves with old enemies.

Jake and Charles investigate a dangerous serial killer. Holt continues to spar with his rival, Commissioner Kelly. Terry finds out about whether or not he has passed the lieutenant’s exam.

When investigating a serial killer, Jake enlists Holt’s help in an attempt to solve the case off the radar. At the precinct, Rosa and Amy are forced to deal with…

After Holt is transferred to the NYPD Department of Public Relations, the new captain’s arrival causes the precinct to dissolve into chaos, despite Terry’s best efforts to keep everyone on…

Jake and Amy go undercover to catch Brooklyn’s most notorious identity thief, and the case brings them closer together – very close. Meanwhile, the entire precinct is caught off-guard when…

Holt is wary when Wuntch lets Jake work his dream case, worried that she is setting him up to fail. Back at the precinct, Amy, Rosa and Gina help Terry…

When Sophia’s job gets in the way of her relationship with Jake, Jake tries to smooth things over with her boss. Meanwhile, Wuntch needs Holt’s help for a job recommendation.

Jake and Charles’ bro-mance starts to crack when they volunteer for an eight-day stakeout in very close quarters. Meanwhile, Captain Holt’s nephew, Marcus, comes to Brooklyn and captures Rosa’s attention.

There’s a mole in the precinct and Holt and Jake need to find out who it is before Deputy Chief Madeline Wuntch gets wind of it. Meanwhile, Terry and Rosa…

The squad has time to kill when the arrival of the Serbian President’s motorcade to Brooklyn has been delayed. So, Jake launches “The Jimmy Jab Games,” an annual series of…

Holt is taken by surprise when his longtime nemesis, Deputy Chief Madeline Wuntch arrives for an inspection of his precinct. Meanwhile, Jake and Terry test the boundaries of “work friends”…