The Oolong Slayer: Peralta enlists Captain Holt's help while investigating a serial killer. Diaz and Santiago are forced to deal with The Vulture's demands. (S3 Ep4) [AD,S]
Halloween III: The third instalment of Peralta and Holt's 'Halloween heist' involves a tie-breaking contest to be crowned Amazing Detective Slash Genius. (S3 Ep5) [AD,S]
The Oolong Slayer: Peralta enlists Captain Holt's help while investigating a serial killer. Diaz and Santiago are forced to deal with The Vulture's demands. (S3 Ep4) [AD,S]
Halloween III: The third instalment of Peralta and Holt's 'Halloween heist' involves a tie-breaking contest to be crowned Amazing Detective Slash Genius. (S3 Ep5) [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 9-8: Peralta is reunited with his old partner when the Nine-Nine have to host officers from the Nine-Eight precinct because of a flood. (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 9-8: Peralta is reunited with his old partner when the Nine-Nine have to host officers from the Nine-Eight precinct because of a flood. (S3 Ep15) [AD,S]
Into the Woods: Peralta and Boyle persuade Jeffords to join them on a weekend trip to a cabin in the woods, but it isn't the fun excursion they'd hoped for. (S3 Ep6) [AD,S]
The Mattress: Peralta and Santiago convince Captain Holt to let them work together on a case involving a new street drug, but their romance gets in the way. (S3 Ep7) [AD,S]
Into the Woods: Peralta and Boyle persuade Jeffords to join them on a weekend trip to a cabin in the woods, but it isn't the fun excursion they'd hoped for. (S3 Ep6) [AD,S]
The Mattress: Peralta and Santiago convince Captain Holt to let them work together on a case involving a new street drug, but their romance gets in the way. (S3 Ep7) [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]
Adrian Pimento: The precinct gets a new detective who's been on a 12-year undercover assignment with the Mob. Gina directs a video for Captain Holt. (S3 Ep17)
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]
Adrian Pimento: The precinct gets a new detective who's been on a 12-year undercover assignment with the Mob. Gina directs a video for Captain Holt. (S3 Ep17)
Ava: Jeffords asks Peralta to take care of his pregnant wife when she drops by at the precinct while he and Diaz are out investigating a murder case. (S3 Ep8) [AD,S]
The Swedes: Santiago and Jeffords help Gina to prepare for an exam. Peralta and Diaz work with two Swedish detectives on an international jewel theft case. (S3 Ep9) [AD,S]
Ava: Jeffords asks Peralta to take care of his pregnant wife when she drops by at the precinct while he and Diaz are out investigating a murder case. (S3 Ep8) [AD,S]
The Swedes: Santiago and Jeffords help Gina to prepare for an exam. Peralta and Diaz work with two Swedish detectives on an international jewel theft case. (S3 Ep9) [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]
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]
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]
Yippie Kayak: Peralta, Boyle and Gina get involved in a hostage situation while they're shopping on Christmas Eve. Santiago tries to prove that she's as tough as Holt and Diaz. (S3 Ep10)
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]
Yippie Kayak: Peralta, Boyle and Gina get involved in a hostage situation while they're shopping on Christmas Eve. Santiago tries to prove that she's as tough as Holt and Diaz. (S3 Ep10)
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]
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]
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]
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]
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]
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]
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]
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]
Greg and Larry: The squad drop everything when they realise that Holt is in danger as the search for Pimento's hitman takes an unexpected turn. (S3 Ep23)
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]
Greg and Larry: The squad drop everything when they realise that Holt is in danger as the search for Pimento's hitman takes an unexpected turn. (S3 Ep23)
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 9-8: Peralta is reunited with his old partner when the Nine-Nine have to host officers from the Nine-Eight precinct because of a flood. (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 9-8: Peralta is reunited with his old partner when the Nine-Nine have to host officers from the Nine-Eight precinct because of a flood. (S3 Ep15) [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]
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]
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]
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]
Boyle's Hunch: Peralta thinks Boyle might have found his soul-mate in art gallery owner Genevieve. Diaz deals with a case of theft in the precinct building. (S3 Ep3) [AD,S]
The Funeral: Another personnel change at the precinct puts Peralta and Santiago's budding relationship at risk. Meanwhile, Boyle is attracted to a fellow officer. (S3 Ep2) [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]
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]
New Captain: After Holt is transferred to the NYPD Department of Public Relations, the arrival of a new captain causes chaos at the precinct. (S3 Ep1) [AD,S]
Johnny and Dora: Peralta and Santiago go undercover to catch Brooklyn's most notorious identity thief, but working together brings them closer than ever before. (S2 Ep23) [AD,S]
The Swedes: Santiago and Jeffords help Gina to prepare for an exam. Peralta and Diaz work with two Swedish detectives on an international jewel theft case. (S3 Ep9) [AD,S]
Ava: Jeffords asks Peralta to take care of his pregnant wife when she drops by at the precinct while he and Diaz are out investigating a murder case. (S3 Ep8) [AD,S]
The Chopper: When Chief Madeline Wuntch allows Peralta to work on his dream case, Captain Holt worries that she's setting the precinct up to fail. (S2 Ep22) [AD,S]
Det. Dave Majors: Peralta is excited to work on a case with Dave Majors, the best detective in the NYPD, until Majors reveals that he plans to ask Santiago out. (S2 Ep21) [AD,S]
The Mattress: Peralta and Santiago convince Captain Holt to let them work together on a case involving a new street drug, but their romance gets in the way. (S3 Ep7) [AD,S]
Into the Woods: Peralta and Boyle persuade Jeffords to join them on a weekend trip to a cabin in the woods, but it isn't the fun excursion they'd hoped for. (S3 Ep6) [AD,S]
AC/DC: Peralta injures himself chasing a suspect but won't take time off to recover. Holt and Diaz have an awkward dinner date with their significant others. (S2 Ep20) [AD,S]
Sabotage: Peralta thinks someone's trying to sabotage his professional life, but Santiago and Diaz aren't convinced. Boyle, Hitchcock and Scully work on a tricky case. (S2 Ep19) [AD,S]
Halloween III: The third instalment of Peralta and Holt's 'Halloween heist' involves a tie-breaking contest to be crowned Amazing Detective Slash Genius. (S3 Ep5) [AD,S]
The Oolong Slayer: Peralta enlists Captain Holt's help while investigating a serial killer. Diaz and Santiago are forced to deal with The Vulture's demands. (S3 Ep4) [AD,S]
Captain Peralta: Peralta's father, an airline pilot who hasn't played a big part in his life, comes to town. Holt sets the squad an impossible brain teaser. (S2 Ep18) [AD,S]
Boyle's Hunch: Peralta thinks Boyle might have found his soul-mate in art gallery owner Genevieve. Diaz deals with a case of theft in the precinct building. (S3 Ep3) [AD,S]
The Funeral: Another personnel change at the precinct puts Peralta and Santiago's budding relationship at risk. Meanwhile, Boyle is attracted to a fellow officer. (S3 Ep2) [AD,S]
The Wednesday Incident: When Peralta notices that Captain Holt is in a bad mood, he teams up with Holt's husband Kevin to find out what's gone wrong. (S2 Ep16) [AD,S]
New Captain: After Holt is transferred to the NYPD Department of Public Relations, the arrival of a new captain causes chaos at the precinct. (S3 Ep1) [AD,S]
Johnny and Dora: Peralta and Santiago go undercover to catch Brooklyn's most notorious identity thief, but working together brings them closer than ever before. (S2 Ep23) [AD,S]
Defense Rests: Sophia's job gets in the way of her relationship with Peralta. Deputy Chief Wuntch needs Captain Holt's help with a job recommendation. (S2 Ep14) [AD,S]
Payback: The squad decide that it's high time for Peralta to pay them back all the money they've lent him over the years. Santiago and Holt reopen an arson case. (S2 Ep13) [AD,S]
The Chopper: When Chief Madeline Wuntch allows Peralta to work on his dream case, Captain Holt worries that she's setting the precinct up to fail. (S2 Ep22) [AD,S]
Det. Dave Majors: Peralta is excited to work on a case with Dave Majors, the best detective in the NYPD, until Majors reveals that he plans to ask Santiago out. (S2 Ep21) [AD,S]
Beach House: The team are excited about visiting Boyle's beach house for a detectives-only weekend getaway, until Peralta ruins the fun by inviting Captain Holt. (S2 Ep12) [AD,S]
Stakeout: Peralta and Boyle go on an eight-day stakeout, putting a strain on their friendship. Holt's nephew visits and makes an instant impression on Diaz. (S2 Ep11) [AD,S]
AC/DC: Peralta injures himself chasing a suspect but won't take time off to recover. Holt and Diaz have an awkward dinner date with their significant others. (S2 Ep20) [AD,S]
Sabotage: Peralta thinks someone's trying to sabotage his professional life, but Santiago and Diaz aren't convinced. Boyle, Hitchcock and Scully work on a tricky case. (S2 Ep19)
The Pontiac Bandit Returns: Doug Judy is back in custody after scamming Peralta and Diaz when they last met, but Captain Holt offers him a plea deal. (S2 Ep10) [AD,S]
The Road Trip: Jake tries to do something nice for Amy when he invites her boyfriend Teddy along on a work trip. It's a shame Amy's about to dump him... (S2 Ep9) [AD,S]
Captain Peralta: Peralta's father, an airline pilot who hasn't played a big part in his life, comes to town. Holt sets the squad an impossible brain teaser. (S2 Ep18) [AD,S]
USPIS: Peralta and Boyle reluctantly join forces with Agent Jack Danger (Ed Helms), a pompous investigator at the US Postal Inspection Service, to catch a drug dealer. (S2 Ep8) [AD,S]
Lockdown: Peralta is left in charge of the precinct at Thanksgiving when Holt and Jeffords are away, but chaos ensues when a strange package is delivered. (S2 Ep7) [AD,S]
The Wednesday Incident: When Peralta notices that Captain Holt is in a bad mood, he teams up with Holt's husband Kevin to find out what's gone wrong. (S2 Ep16) [AD,S]
Jake and Sophia: Peralta hits it off with a woman in a bar, only to find out that she's the defence attorney representing a suspect who he wants to put in jail. (S2 Ep6) [AD,S]
The Mole: When an Internal Affairs investigator reveals that there's a mole in the precinct, Peralta and Holt must find out who it is before Wuntch catches on. (S2 Ep5) [AD,S]
Defense Rests: Sophia's job gets in the way of her relationship with Peralta. Deputy Chief Wuntch needs Captain Holt's help with a job recommendation. (S2 Ep14) [AD,S]
Payback: The squad decide that it's high time for Peralta to pay them back all the money they've lent him over the years. Santiago and Holt reopen an arson case. (S2 Ep13) [AD,S]
The Jimmy Jab Games: When the squad have time to kill, Peralta launches the seventh annual Jimmy Jab Games, an eccentric series of contests held in the precinct building. (S2 Ep3) [AD,S]
Beach House: The team are excited about visiting Boyle's beach house for a detectives-only weekend getaway, until Peralta ruins the fun by inviting Captain Holt. (S2 Ep12) [AD,S]
Stakeout: Peralta and Boyle go on an eight-day stakeout, putting a strain on their friendship. Holt's nephew visits and makes an instant impression on Diaz. (S2 Ep11) [AD,S]