Castle deals with the mob during Christmastime this week on “Bad Santa.” Check out the synopsis and episode stills below.

Last week saw what will surely be a classic episode of Castle when Rick’s beloved B movie stars used him to find the murderer of a fellow actor. This would be the episode to nominate for a multitude of comedy awards, if one were so inclined.

This week is the last new episode of the year and it promises to be a doozy. Castle will be pleased that it involves the mob and hopefully some answers to his disappearance in the premiere.

The official synopsis for Castle season 7, episode 10:

“When an ER physician is gunned down in the street, Castle and Beckett soon discover that the victim was a mob doctor to a Mafia family run by an old friend of Castle’s. Also, against the backdrop of Christmas, Esposito and Lanie reach a defining moment in their relationship.”

The guest cast includes Carole Gutierrez as Dr. Deb Lander, Larry Poindexter as Det. McBride, Vincent Spano as Christopher Carlucci, Mo Gallini as Rocco Carducci, Paul Ben-Victor as Dino Scarpella, and Alex Frnka as Jane Scarpella.

What is going to happen with Lanie and Esposito? After his scare in the subway a couple episodes ago, one would think that they will either commit to each other or move on. Here’s hoping those two crazy kids settle down!

Take a look at the pictures below and see if you can find any clues!

Did you spot anything new in these Castle photos?