Jake is determined to prove that he's not to blame for Holt's bad mood, and when Charles catches a notorious bank robber, nobody believes him.

Another shakeup at the precinct spells trouble for Jake and Amy, while a string of disappointments sends Holt into a downward spiral.

Jake persuades Scully and Hitchcock to take over a drug bust so he can help out with a "celebrity" matter. But neither case is what the team expected.

It’s Halloween in the Nine-Nine, which can only mean one thing: heist time. This year, the squad members pull out all the stops in their quest to win the new defending title of “Ultimate Detective Slash Genius.” Lines are drawn and plans are made, but there can only be one reigning champion.

As Jake begins an intense interrogation of a wily dentist suspected of murder, an opera-bound Holt jumps in to assist. Sterling K. Brown guest-stars.

Jake helps Amy navigate the complicated relationship she has with her brother, David. Charles introduces some drama into an undercover mission involving Terry and Holt.

The squad suspects an inside job when guns and cocaine connected to a notorious crime boss go missing from the Nine-Nine.

Holt risks his career by refusing to let his greatest nemesis have the last word. Boyle and Terry compete for Jake's tickets to an exclusive kid event.

Captain Holt and Amy manage an understaffed precinct. Jake and Charles investigate.

The squad takes stock of its eight years together and looks toward the future.