Jake and Rosa assimilate to their new lives behind bars, but both are coping in very different ways. Jake bonds with his cellmate, Caleb, and is forced to join a prison gang led by notorious inmate Romero, in order to gain his protection. Meanwhile, in the women's prison, Rosa puts Holt and Terry to the test by having them complete outrageous favors for her. Back in the precinct, Amy and Charles are doing all they can to exonerate their colleagues. Written by Fox

When the warden asks Jake to investigate Romero's drug smuggling operation, Jake and Caleb find themselves caught between the loyalty Jake has sworn to both of them. Meanwhile, Amy is offered a deal by a local mobster who claims he can prove that Hawkins is guilty, but Holt and the rest of the gang think they have a safer plan. Written by sarah_l91

Now that he's officially back at the precinct and desperate to solve a real case, Jake finds a loophole to get out of his temporarily designated desk duty. Unfortunately, that loophole rests on his ability to pass an official evaluation performed by Holt. While Charles provides Jake with moral support, Terry and Amy help Rosa, who believes Pimento may be cheating on her. Written by Fox

The Nine-Nine embarks on its fifth annual Halloween Heist and, as usual, everybody has a plan and no one is safe. Relationships and friendships are tested as the title Amazing Human Slash Genius must be snagged by midnight, leaving everyone pitted against each other. Written by Fox

To track down the infamous arms dealer Dan Daniel Valdano, Jake and Terry go undercover at an illegal gambling club, but when Holt gets involved to coach the two in the art of poker, his addiction resurfaces. Meanwhile, Boyle buys a food truck that was formerly used in a brutal string of murders without telling his investor, Amy, and Hitchcock and Scully challenge Rosa to a Butt-lympics.

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.

While the entire precinct attends a funeral in LA, Holt learns that he is in the running to become Chief Commissioner of the NYPD - his dream job. But after missing their flight back to New York, Jake must devise a variety of ways to get Holt back in time for the interview. Forced to stay with some estranged members of the Boyle family, Amy tries to convince everyone that she can be laid back, Terry panics about losing his first-class flight and Charles uncovers some new information about Rosa's personal life. Written by sarah_l91

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.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

Captain Ray Holt takes over Brooklyn's 99th precinct, which includes Detective Jake Peralta, a talented but carefree detective who's used to doing whatever he wants. The other employees of the 99th precinct include Detective Amy Santiago, Jake's over achieving and competitive partner; Detective Rosa Diaz, a tough and kept to herself coworker; Detective Charles Boyle, Jake's best friend who also has crush on Rosa; Detective Sergeant Terry Jeffords, who was recently taken off the field after the birth of his twin girls; and Gina Linetti, the precinct's sarcastic administrator.

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 manage 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.