Jake and Rosa each adjust differently to life in prison.

Jake is torn between the warden and Romero, while a local mobster claims he can prove that Hawkins is guilty.

Jake must pass an official evaluation performed by Holt in order to solve a real case.

The Nine-Nine has their fifth annual Halloween heist, and everyone has until midnight to claim the title of "Amazing Human/Genius".

Jake, Terry and Holt go undercover at an illegal gambling club to track down an arms dealer.

The Vulture returns and threatens to take away something important from Jake and Amy.

Jake and Amy bring their parents together for Thanksgiving.

When DC Parlov returns to the precinct to report his latest manuscript being stolen, Terry, Jake and Rosa go undercover at a fantasy convention to catch the culprit.

Holt learns he's in the running to become Chief Commissioner of the NYPD when the squad is in LA for a funeral, but when they miss their flight back to New York, Jake tries to get Holt back in time for the interview.

Jake helps Rosa break big news to her parents.

Holt owes Seamus Murphy a favor, so the precinct searches for a loophole that will allow the captain to keep his end of the bargain without breaking the law.

After Seamus threatens Kevin, Holt devises an elaborate plan to hide him in a safe house, with Jake as his guard. Kevin is miserable as the 99 works overtime to find Seamus and take him down.

Jake runs into a familiar face when he's called in to negotiate a hostage situation with a jewel thief.

Jake and Holt spend all night trying to get a confession out of a suspect.

Jake and Amy investigate a series of arsons connected to Amy's favorite crossword puzzle author.

Jake and Charles get suckered into a pyramid scheme.

Jake meets his half-sister and she invites herself to stay.

Pimento shows up as the insurance agent when a fire destroys Charles' food truck.

Charles plans a scavenger hunt for Jake's bachelor party; Amy's bachelorette party escalates when it's discovered she once slept with a member of her soon-to-be wedding band.

The Nine-Nine fears for Rosa's safety when she responds to an active shooter alert.

Rosa and Amy track down a killer who's managed to elude them for seven years; Terry helps Jake with his wedding chores; Holt and his rival try to convince each other to resign from the campaign for Commissioner.

The squad rushes to save Jake and Amy's wedding day from a major threat.