An exclusive sneak peek for the finale of season 10 of Criminal Minds was revealed by TVGuide.com and it gives away a few clues about the case that will be taken up.

The BAU Will Be Fighing For 'One Of Their Own' In Finale 

The show's creator Erica Messer speaks about the episode, which will bring back the criminal, "the creepy, internet stalker guy," the BAU was investigating in the first episode.

"The season finale is a culmination of a bad guy that we set up in the beginning of season 10, we've done this before where we set up a new good guy," Messer said. She added that in this scenario Kate was the "good guy."

Upcoming Episode To Be 'Most Shocking' Ever, Matthew Gray Gubler Dishes

Kate's niece, Meg, was kidnapped in the latest episode, and set up a cliffhanger for the finale.

Megan's been "dealt a very hard set of circumstances and cards," Hewitt says in the clip.

"By taking one of ours it makes it all hands on deck, frieght train crazy of a finale," Messer added.

As part of some of the footage from the finale, Morgan (Shemar Moore) states that the "criminal isn't some loner who wants to keeps girls in a dungeon," and it felt more like trafficking.

In a previous interview with Zap2it, Messer had revealed that the finale will be a "heavy episode" for Kate. The report went on to state that everything would come full circle for her in the episode.

The finale will air on May 6.

Watch the clip:

Tags: Criminal Minds CBS television