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.

Charles enlists Jake’s help in tracking down his son’s favorite toy for Christmas, and the two find themselves accidentally facing off against a Latvian criminal ring as a result. Back…

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…

As Jake struggles with his first case back at the precinct, he encounters Jess Day, who is visiting New York, and enlists her to help him find his suspect. Meanwhile,…