Credit: Richard Cartwright /ABC Television Group © 2011 Disney Photo: Beckett Gets a Closer Look in Castle Season 5, Episode 9: "Secret Santa"

Time to break out the mistletoe and holiday cookies, Castle fans! Tonight, Dec. 3, Rick and Kate are getting into the Christmas spirit.

In our favorite detectives’ latest case, Santa Claus is decked out in a new shade of red — crimson. In Season 5, Episode 9: “Secret Santa,” the dynamic duo investigates the mysterious death of “Kris Kringle,” who literally falls from the sky in Central Park.

Of course, it isn’t all about whether Santa was naughty or nice. Creator Andrew Marlowe told Wetpaint Entertainment that Caskett’s first Christmas together will be “fun” and “challenging,” and we can’t wait to see what that entails.

To tide you over until tonight’s episode, check out the promo, two sets of spoiler photos, and our wish list of five things we hope will happen in “Secret Santa."

Are you excited for Castle’s Christmas? Sound off below!

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