Get a sneak peek at January's 'Chicago Fire' and 'P.D.' crossover

Chicago Fire and Chicago P.D. may be taking a break for the holidays, but the good news is we have a crossover between the two shows to look forward to when they return in January.

The Fire/P.D. crossover will air on Tuesday, January 3 from 9-11p.m., and Mashable has an exclusive sneak peek from the Chicago P.D. installment, which sees a newly promoted Burgess (Marina Squerciati) meeting her new partner -- and one of them isn't very enthusiastic about it.

The crossover kicks off with a new installment of Chicago Fire at 9 p.m., in which Dawson (Monica Raymund) and Casey (Jesse Spencer) deal with legal matters in hopes of remaining Louie’s legal guardians. Elsewhere, Severide (Taylor Kinney) continues in his efforts for a bone marrow procedure to help Anna (Charlotte Sullivan), but when things don’t go as planned, he finds himself slipping back into old habits. Meanwhile, Brett (Kara Killmer) opens up to Dawson and members of Firehouse 51 become competitive, much to the dismay of Chief Boden (Eamonn Walker).

Then, in P.D., Severide is brought into the District for questioning after his car is found to have caused a deadly crash. As the investigation gets underway, the team works to uncover a group of car-jackers who may be the key to Severide’s innocence. Meanwhile, Voight (Jason Beghe) pairs Burgess with Olinsky (Elias Koteas), who has a hard time feigning his excitement about this new partnership, and Lindsay (Sophia Bush) considers meeting her estranged father who is now out of prison.