The synopsis for the winter finale of season 10 of Criminal Minds was recently revealed.

The title of the episode is Amelia Porter, and in this one the BAU will deal with a triple homicide in Salt Lake City.

Kristen Vangsness, who plays Penelope Garcia on Criminal Minds, tweeted about her co-writing episode 13 of the CBS procedural with Erica Messer.

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"I am co-writing episode 13 on this season (that @BenSavage will be in!) with my boss lady & here is us in action..." she tweeted.

She also posted a picture of her and Messer exchanging notes about the script, while comfortably seated on a couch with their laptops in place.

On November 10, TVGuide reported that Savage will be portraying a younger version of the character which Mandy Patinkin orginally played in episode 13. This will be part of a flashback featuring David Rossi (Joe Mantegna) and Gideon, rewinding to their earlier days. Robert Dunne will be playing the younger part for Rossi. Messer also spoke to TVGuide about what can be expected from the episode, which is a "love letter to fans."

"I've wanted to go back to how the BAU all started and now being in Season 10, it feels like it's time," Messer said. "I'm really excited about it to show our heroes from the beginning in the bomb shelter in Quantico. [Rossi's] memory drives us into the flashback, but it's also very reflective for the whole cast. It's not a typical episode."

Here's the official synopsis:

"When BAU is called to Salt Lake City Utah to investigate a triple homicide, the search for a connection among the victims could lead them to a fugitive who could have ties to the UnSub."

Watch the trailer here:

Tags: Criminal Minds CBS television