The Slaughterhouse: Peralta and Diaz try to earn the respect of their idol, Lt Melanie Hawkins, after accidentally disrupting one of her undercover cases. (S4 Ep20) [AD,S]
Your Honor: Captain Holt's mother seeks help from the precinct. Jeffords, Diaz and Boyle redecorate the breakroom. Santiago teaches Gina how to change a tyre. (S4 Ep19) [AD,S]
Chasing Amy: Santiago vanishes hours before she is due to take her sergeant's exam. Peralta and Diaz try to locate her and bring her back before it's too late. (S4 Ep18) [AD,S]
Cop-Con: The squad visit the annual Cop-Con event, usually an excuse for a party, but Captain Holt spoils the fun by asking them to be on their best behaviour. (S4 Ep17) [AD,S]
The Last Ride: Peralta and Boyle go to extremes to catch a bike thief. Diaz soothes Jeffords' ego after a professional setback. Santiago spends time with Holt. (S4 Ep15) [AD,S]
Moo Moo: Jeffords aims to file a complaint against a fellow police officer who stops him in his own neighbourhood while he's off duty, but Holt has other ideas. (S4 Ep16) [AD,S]
The Last Ride: Peralta and Boyle go to extremes to catch a bike thief. Diaz soothes Jeffords' ego after a professional setback. Santiago spends time with Holt. (S4 Ep15) [AD,S,SL]
Serve & Protect: A burglary on the set of a TV detective show distracts Peralta and Diaz from the precinct's on-going evaluation as a new auditor takes over. (S4 Ep14) [AD,S]
The Audit: One of the precincts in the area must be closed, so an evaluation takes place. The team find out that the auditor is Santiago's ex-boyfriend, Teddy. (S4 Ep13) [AD,S]
Serve & Protect: A burglary on the set of a TV detective show distracts Peralta and Diaz from the precinct's on-going evaluation as a new auditor takes over. (S4 Ep14) [AD,S]
The Audit: One of the precincts in the area must be closed, so an evaluation takes place. The team find out that the auditor is Santiago's ex-boyfriend, Teddy. (S4 Ep13) [AD,S]
The Overmining: Peralta and Holt help CJ with a big case that is proving problematic. Jeffords tells Gina to remove her precious portable heater from the office. (S4 Ep9) [AD,S,SL]
Captain Latvia: Boyle enlists Peralta's help in tracking down his son's favourite toy for Christmas. The team face their rivals in the annual carol competition. (S4 Ep10) [AD,S]
The Overmining: Peralta and Holt help CJ with a big case that is proving problematic. Jeffords tells Gina to remove her precious portable heater from the office. (S4 Ep9) [AD,S]
Mr Santiago: Peralta goes to extremes to impress Santiago's dad at Thanksgiving dinner. Holt helps Pimento deal with no longer being able to work for the NYPD. (S4 Ep7) [AD,S]
Skyfire Cycle: When a famous author receives death threats, Peralta and Jeffords take the case so that Jeffords can meet his lifelong literary hero. (S4 Ep8) [AD,S]
Mr Santiago: Peralta goes to extremes to impress Santiago's dad at Thanksgiving dinner. Holt helps Pimento deal with no longer being able to work for the NYPD. (S4 Ep7) [AD,S]
Monster in the Closet: When Pimento and Diaz decide to tie the knot, the squad members try to prepare the perfect wedding under Santiago's careful direction. (S4 Ep6) [AD,S,SL]
Halloween IV: On Halloween night, the squad members follow precinct tradition and compete for the title of Ultimate Detective Slash Genius. (S4 Ep5) [AD,S,SL]
Monster in the Closet: When Pimento and Diaz decide to tie the knot, the squad members try to prepare the perfect wedding under Santiago's careful direction. (S4 Ep6) [AD,S]
Halloween IV: On Halloween night, the squad members follow precinct tradition and compete for the title of Ultimate Detective Slash Genius. (S4 Ep5) [AD,S]
The Night Shift: Holt looks for ways to improve the team's morale, while Santiago is filled with curiosity when Diaz starts to take long breaks from her desk. (S4 Ep4) [AD,S,SL]
Coral Palms (Part 3/3): The team go on a road trip to help Peralta and Holt take down crime boss Jimmy Figgis but their plan is hindered by an unforeseen injury. (S4 Ep3) [AD,S,SL]
The Night Shift: Holt looks for ways to improve the team's morale, while Santiago is filled with curiosity when Diaz starts to take long breaks from her desk. (S4 Ep4) [AD,S]
Coral Palms (Part 3/3): The team go on a road trip to help Peralta and Holt take down crime boss Jimmy Figgis but their plan is hindered by an unforeseen injury. (S4 Ep3) [AD,S]
Maximum Security: Santiago goes undercover at a women's prison and befriends one of the inmates. Holt and the team plan a fake funeral to catch a hitman. (S3 Ep21) [AD,S]
Terry Kitties: Jeffords enlists Peralta's help to solve a case from his past. Santiago invites herself to a competitive training exercise with Holt and Diaz. (S3 Ep19) [AD,S]
Coral Palms (Part 1/3): Peralta and Holt adjust to their lives in the Witness Protection Programme while crime boss Jimmy 'The Butcher' Figgis is still at large. (S4 Ep1) [AD,S,SL]
Coral Palms (Part 2/3): Jimmy Figgis sees Peralta and Holt's video and comes looking for them. A new captain takes over the precinct, but is he up to the job? (S4 Ep2) [AD,S]
Coral Palms (Part 1/3): Peralta and Holt adjust to their lives in the Witness Protection Programme while crime boss Jimmy 'The Butcher' Figgis is still at large. (S4 Ep1) [AD,S]
Bureau: Pimento's life is still in peril, so Captain Holt calls on an old friend in the FBI to help identify the crooked agent who tried to have him killed. (S3 Ep22) [AD,S,SL]
Greg and Larry: The squad drop everything to intervene when they realise that Holt is in danger as the search for Pimento's hitman takes an unexpected turn. (S3 Ep23) [AD,S]
Bureau: Pimento's life is still in peril, so Captain Holt calls on an old friend in the FBI to help identify the crooked agent who tried to have him killed. (S3 Ep22) [AD,S]
Paranoia: Jeffords disapproves of Diaz's fast-moving relationship with Pimento, who has started to believe that someone from his past is trying to kill him. (S3 Ep20) [AD,S,SL]
Maximum Security: Santiago goes undercover at a women's prison and befriends one of the inmates. Holt and the team plan a fake funeral to catch a hitman. (S3 Ep21) [AD,S]
Paranoia: Jeffords disapproves of Diaz's fast-moving relationship with Pimento, who has started to believe that someone from his past is trying to kill him. (S3 Ep20) [AD,S]
Cheddar: Santiago and Peralta house-sit for Captain Holt when he visits Kevin in Paris and mayhem ensues when Holt's beloved dog goes missing on their watch. (S3 Ep18) [AD,S,SL]
Terry Kitties: Jeffords enlists Peralta's help to solve a case from his past. Santiago invites herself to a competitive training exercise with Holt and Diaz. (S3 Ep19) [AD,S]
Cheddar: Santiago and Peralta house-sit for Captain Holt when he visits Kevin in Paris and mayhem ensues when Holt's beloved dog goes missing on their watch. (S3 Ep18) [AD,S]
Adrian Pimento: The precinct gets a new detective who's coming away from a 12-year undercover assignment with the Mob. Gina directs a video for Captain Holt. (S3 Ep17) [AD,S,SL]
House Mouses: Peralta insults Hitchcock and Scully's work ethic, so they try to get involved in a dangerous investigation in an attempt to prove themselves. (S3 Ep16) [AD,S,SL]
Adrian Pimento: The precinct gets a new detective who's coming away from a 12-year undercover assignment with the Mob. Gina directs a video for Captain Holt. (S3 Ep17) [AD,S]
House Mouses: Peralta insults Hitchcock and Scully's work ethic, so they try to get involved in a dangerous investigation in an attempt to prove themselves. (S3 Ep16) [AD,S]
Hostage Situation: Boyle and Genevieve want to take their relationship to a new level, but his ex-wife Eleanor disrupts their plans. Can Peralta help them? (S3 Ep11) [AD,S]
The 9-8: The Nine-Nine play host to officers from nearby precinct the Nine-Eight when their station house is flooded, reuniting Peralta with his old partner. (S3 Ep15) [AD,S]
Karen Peralta: On his birthday, Peralta takes Santiago to meet his mother. Diaz and Boyle struggle to deal with a new mandate on body cams during a stakeout. (S3 Ep14) [AD,S]
The Cruise: Peralta and Santiago set off on their first real holiday together. Gina and Jeffords help Captain Holt to survive a visit from his sister Debbie. (S3 Ep13) [AD,S]
9 Days: Captain Holt and Peralta contract mumps during an investigation, and decide to be quarantined together so they can use the time to solve the case. (S3 Ep12) [AD,S]
Yippie Kayak: Peralta, Boyle and Gina get into trouble while doing some shopping on Christmas Eve. Santiago tries to prove she's as tough as Holt and Diaz. (S3 Ep10) [AD,S,SL]
Hostage Situation: Boyle and Genevieve want to take their relationship to a new level, but his ex-wife Eleanor disrupts their plans. Can Peralta help them? (S3 Ep11) [AD,S]