Antonio Raul Corbo

Pimento and Rosa decide to pick up where they left off and get married, so the whole squad preps a perfect wedding under Amy’s careful direction. Pimento enlists Jake and Gina to hunt for his grandmother’s ruby earrings for Rosa to wear in the ceremony, but the universe has other plans for them.

Jake runs into Jess Day, who is visiting from Los Angeles, and enlists her help on a case; Holt looks for ways to improve morale; Amy investigates Rosa's long breaks.

When Jake helps Charles track down his son's favorite toy for Christmas, the pair end up facing off against a Latvian crime ring; at the precinct, the team gets ready for the annual caroling contest against its sworn enemy, the MTA.

A visitor from Latvia causes Charles and Jake to investigate Nikolaj's family; Holt and Amy bring in famed forensic scientist Dr. Yee to help close a case for Rosa.

When Gina returns to the Nine Nine, Jake and Terry get drawn into her life. Holt learns that Charles’s son, Nikolaj, may be a genius. Rosa copes with an injury.

Capt. Holt deals with a personal loss; Jake must decide whether to take Terry or Charles to an exclusive event.