<P> The fifth season of the television sitcom Brooklyn Nine - Nine premiered September 26, 2017 on Fox . </P> <P> Jake and Rosa adjust to life in jail before the Nine - Nine are able to bust Melanie Hawkins when Holt is forced to make a deal with local mobster Seamus Murphy . Jake realizes he's not ready to be back out in the field and Rosa breaks up with Adrian . During the fifth annual Halloween heist, Jake proposes to Amy and they get engaged . On a trip to Los Angeles for the funeral of the Nine - Nine's previous captain, Holt learns he's in the running to become the new police commissioner and the crew vows to help him deal with Murphy . Rosa comes out as bisexual . </P> <Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers (millions) </Th> </Tr> <Tr> <Th> 91 </Th> <Td> </Td> <Td> "The Big House Pt. 1" </Td> <Td> Tristram Shapeero </Td> <Td> Luke Del Tredici </Td> <Td> September 26, 2017 (2017 - 09 - 26) </Td> <Td> 501 </Td> <Td> 2.00 </Td> </Tr> <Tr> <Td_colspan="8"> Jake and Rosa have been in prison for a while, with Jake having to deal with his amiable mass - murdering cannibal cellmate, and Rosa doing whatever it takes to establish herself as someone not to be messed with . Jake ends up being put in the general population after smuggling "street soups" to a feared gang led by Romero, and Holt and Terry struggle to fill a very long list of requests for help by Rosa after she realizes they're not going to stop trying to help her . Amy and Boyle badly miss Jake, and Gina is on maternity leave . </Td> </Tr> <Tr> <Th> 92 </Th> <Td> </Td> <Td> "The Big House Pt. 2" </Td> <Td> Michael McDonald </Td> <Td> Justin Noble </Td> <Td> October 3, 2017 (2017 - 10 - 03) </Td> <Td> 502 </Td> <Td> 1.74 </Td> </Tr> <Tr> <Td_colspan="8"> Jake undertakes a dangerous undercover mission at the warden's behest, but it looks like he'll end up getting killed by Romero no matter how it turns out . The squad tries to figure out how to get the goods on Lt. Hawkins and prove she was behind the robberies she framed Jake and Rosa for . An operation to hack into her phone is one option, but a more viable and much more dangerous one involves a Hawkins - loathing mob boss named Seamus Murphy who will give Amy the information to clear Jake and Rosa if she will "do a favor for me" in return . When the operation fails, Holt secretly obtains the information from Murphy, resulting in Jake and Rosa's freedom at the cost of a favor Holt will owe Murphy in the future . </Td> </Tr> <Tr> <Th> 93 </Th> <Td> </Td> <Td> "Kicks" </Td> <Td> Eric Appel </Td> <Td> Andrew Guest </Td> <Td> October 10, 2017 (2017 - 10 - 10) </Td> <Td> 503 </Td> <Td> 1.68 </Td> </Tr> <Tr> <Td_colspan="8"> Jake must pass an official evaluation performed by Holt in order to get back in the field after his incarceration . When Jake starts doubting his choices after the prime suspect claims innocence, he sees it as a weakness, but Holt sees is as a strength . Meanwhile, Rosa gets Amy and Terry's assistance to discover if Pimento is cheating on her . Despite being proven innocent, Rosa decides to break up with him regardless after realizing she would've felt relieved had he been caught and she ended the relationship . </Td> </Tr> <Tr> <Th> 94 </Th> <Td> </Td> <Td> "HalloVeen" </Td> <Td> Jamie Babbit </Td> <Td> Dan Goor </Td> <Td> October 17, 2017 (2017 - 10 - 17) </Td> <Td> 504 </Td> <Td> 1.69 </Td> </Tr> <Tr> <Td_colspan="8"> On the fifth annual Halloween heist, all members of the squad try to capture the champion cummerbund . Charles, Rosa and Terry team up to form "The Tramps". Amy figures out Jake's plan and finds the cummerbund; it is then revealed that Jake changed the inscription on the belt from "amazing human / genius" to "Amy Santiago, will you marry me?" Amy accepts and Boyle faints upon learning they are finally engaged . While he is happy for them, Captain Holt is slightly upset by the fact that no one technically won the heist since Jake changed the belt . </Td> </Tr> <Tr> <Th> 95 </Th> <Td> 5 </Td> <Td> "Bad Beat" </Td> <Td> Kat Coiro </Td> <Td> Carol Kolb </Td> <Td> November 7, 2017 (2017 - 11 - 07) </Td> <Td> 505 </Td> <Td> 1.50 </Td> </Tr> <Tr> <Td_colspan="8"> Jake and Terry propose to join an underground gambling ring to catch a criminal . However, in the process, Captain Holt relapses into his old gambling addiction . Charles is planning a new food truck venture and ropes in Amy as an investor, only to later tell her that the truck he bought was the scene of a notorious murder . Rosa accepts Hitchcock's and Scully's challenge when they say she can't sit all day like they do . </Td> </Tr> <Tr> <Th> 96 </Th> <Td> 6 </Td> <Td> "The Venue" </Td> <Td> Cortney Carrillo </Td> <Td> Matt Lawton </Td> <Td> November 14, 2017 (2017 - 11 - 14) </Td> <Td> 506 </Td> <Td> 1.65 </Td> </Tr> <Tr> <Td_colspan="8"> Jake and Amy find a mansion that makes a perfect venue for their wedding only to have it snatched at the last second by The Vulture, who is also planning to get married on the same day . After finding out that his fiancé, Jean Munroe, is a kind charity worker, they debate over whether they want the venue or to save Jean from her marriage . Charles and Rosa track down and rescue Sergeant Peanut Butter, whom Charles still envies for stealing his thunder when he received his Medal of Valor . Much to Charles' dismay, Peanut Butter is given the credit for the rescue despite Charles saving his life . Captain Holt tries to convince Terry to be less image - conscious after Terry begins to prepare a party for a cop he accidentally offended . </Td> </Tr> <Tr> <Th> 97 </Th> <Td> 7 </Td> <Td> "Two Turkeys" </Td> <Td> Alex Reid </Td> <Td> David Phillips </Td> <Td> November 21, 2017 (2017 - 11 - 21) </Td> <Td> 508 </Td> <Td> 1.66 </Td> </Tr> <Tr> <Td_colspan="8"> Jake and Amy attempt to get their parents to bond over Thanksgiving dinner, but their first holiday together as a family does not go well . However, an unexpected injury causes both sets of parents to reexamine their feelings towards each other . Elsewhere, Holt and husband Kevin's Thanksgiving pie goes missing, and Holt suspects Rosa, Boyle, and Terry may have taken the pie . After interrogating them with no luck, Holt enlists the help of Hitchcock and Scully in order to uncover the culprit and find the pie . </Td> </Tr> <Tr> <Th> 98 </Th> <Td> 8 </Td> <Td> "Return to Skyfire" </Td> <Td> Linda Mendoza </Td> <Td> Neil Campbell </Td> <Td> November 28, 2017 (2017 - 11 - 28) </Td> <Td> 507 </Td> <Td> 1.73 </Td> </Tr> <Tr> <Td_colspan="8"> Skyfire author DC Parlov returns to the precinct after the latest manuscript for his upcoming book was stolen . Jake, Terry, and Rosa go to a convention to investigate and find out that Parlov's rival Landon Lawson also had his manuscript stolen . As the two authors accuse each other of stealing each other's work, Terry reveals to Jake that he's been writing a fantasy novel of his own . Jake encourages Terry to have Parlov look at it, only to find out that it's terrible . Back at the precinct, Holt, Amy, and Charles take a forensics course and struggle to keep Charles' mouth shut . </Td> </Tr> <Tr> <Th> 99 </Th> <Td> 9 </Td> <Td> "99" </Td> <Td> Payman Benz </Td> <Td> Andy Bobrow </Td> <Td> December 5, 2017 (2017 - 12 - 05) </Td> <Td> 509 </Td> <Td> 1.94 </Td> </Tr> <Tr> <Td_colspan="8"> While at a funeral in Los Angeles for their former police chief, Captain Holt finds out he is in the running to be commissioner . After experiencing many difficulties like missing their flight and having their RV explode, Jake and the squad must find a way to get from Los Angeles to New York in time for Holt's interview . Jake finds out that Holt was sabotaging the trip purposefully due to his compromise with Murphy, but Jake and the squad vow to find a way to solve Holt's issue and get him to the interview on time . During the trip, Amy tries to act less serious, Terry's upset about missing his first - class flight, and Charles discovers that Rosa is bisexual and has a girlfriend . </Td> </Tr> <Tr> <Th> 100 </Th> <Td> 10 </Td> <Td> "Game Night" </Td> <Td> Tristram Shapeero </Td> <Td> Justin Noble & Carly Hallam Tosh </Td> <Td> December 12, 2017 (2017 - 12 - 12) </Td> <Td> 510 </Td> <Td> 1.81 </Td> </Tr> <Tr> <Td_colspan="8"> After Rosa reveals she's bisexual to her colleagues, she seeks Jake's help in telling the news to her parents during a dinner with them . Though she initially pretends she's dating Jake during dinner, she comes out and invites Jake to join her family for Game Night, where she finds out how much her parents are willing to accept the change . Meanwhile, the precinct turns to Gina for help when the Cyber Crimes division is using up all their bandwidth, resulting in slow internet . After Gina helps them, she reveals she's planning on quitting the Nine - Nine to pursue a career in entrepreneurship . However, after being touched by Amy and Charles' good - byes, she decides to return to the Nine - Nine while continuing to work on her side business . </Td> </Tr> <Tr> <Th> 101 </Th> <Td> 11 </Td> <Td> "The Favor" </Td> <Td> Victor Nelli Jr . </Td> <Td> Aeysha Carr </Td> <Td> December 12, 2017 (2017 - 12 - 12) </Td> <Td> 511 </Td> <Td> 1.81 </Td> </Tr> <Tr> <Td_colspan="8"> Seamus Murphy finally asks Holt for his favor: To request a permit for a block party that will cover up their next crime . Jake and Charles go undercover and befriend Seamus' dimwitted nephew Kyle to find out what the Murphys are planning and stop it while ensuring Holt doesn't break Seamus' deal . Amy and Rosa try to request a permit for the block party, but when they are rejected, they try to find holes in the bureaucratic system Amy's grown to adore . Terry tries to find Gina time and space to use her breast pump for her baby . After the Nine - Nine uncovers Seamus' plan, they manage to foil the planned robbery while ensuring Holt keeps up his end of the bargain . When they arrest Kyle to protect him from his uncle's wrath, Seamus finds out about the ruse and threatens Kevin's life . </Td> </Tr> </Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers (millions) </Th> </Tr>

Brooklyn nine nine season 5 episode 6 release