Jake convinces Rosa to make a deal with a criminal in order to catch a car thief, while Charles makes an awkward return to the precinct, and Holt tries to get rid of two puppies.

When Holt receives death threats, he surprisingly puts Jake in charge of his security. Meanwhile, Terry undergoes a psych evaluation, and Amy tries to make the perfect holiday card for Holt.

Amy hosts a Thanksgiving dinner at her apartment for everyone at the precinct, but it soon turns into a disaster.

Jake's favorite pizza place burns down and he is determined to prove the owner was not responsible. Meanwhile, Amy is jealous of Rosa's being offered a promotion, and Terry and Gina have to hire a new IT specialist.

Jake is horrified when his hero, Jimmy Brogan, a crime writer, accompanies him on the job, and threatens to quote him in a damning article. Meanwhile, Rosa has to work on her attitude in court.

Jake stupidly arrests a male suspect despite having no evidence and only has 48 hours to prove he did it or release him without charge.

Jake makes a foolish bet with Holt that he can steal his Medal of Valor before Halloween is over, while Amy is forced to wear a costume while undercover with Charles.

A detective from Major Crimes takes over Jake's nearly solved murder case and steals his thunder.

Jake meets an attractive Medical Examiner, but their relationship slows down her work, much to his colleagues' annoyance. Meanwhile, Amy desperately tries to impress Holt.

With a backlog of unsolved cases, Jake finds himself in a slump. Meanwhile, Amy is put in charge of the Junior Police Program for at risk kids, but her efforts to inspire them fall flat.