Credit: MTV

Something is seriously wrong with Stiles on Teen Wolf, and Scott & Co. don’t have much time to figure it out before their friend could be gone… for good.

Wetpaint Entertainment has the exclusive extended promo for Monday’s all-new episode (“Riddled”), and it’s going to have all you Stiles fans on the edges of your seats. It's 40 seconds of pure terror for poor Stiles. What's happening to him? Well, we're about to find out. 

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As we saw in the most recent episode ("Silverfinger"), Stiles (Dylan O’Brien) has been possessed with the dark spirit of the nogitsune — and it was confirmed when he was able to rip a firefly out of one of the Oni, a difficult feat that Scott (Tyler Posey) and the others hadn't been able to do.

Next week's episode, “Riddled,” is all about Stiles. When he goes missing, it's up to Scott, Isaac, and Lydia to find him. It looks like Stiles has been kidnapped by a creepy man with a bandaged face. Does he want the dark spirit that's inside Stiles? "Stiles, why are you whispering?" Scott asks Stiles on the phone. "Because I think there's someone in here with me," he answers, clearly upset. The extended promo then cuts to Stiles being dragged, desperate and screaming, by someone. What does this creepy masked person have in store for our Stiles? Whatever it is, it can't be good.

Will Scott and Isaac be able to find Stiles before it's too late? Will Lydia be able to help them with her new abilities? Grab your tissues and your favorite childhood stuffed animal, Teen Wolf fans. This episode promises to be an emotional and psychological roller coaster — and it's one you definitely don't want to miss! 

Catch the next episode of Teen Wolf on Monday, February 10 at 10 p.m. ET on MTV.

Crystal Bell is an editor at Wetpaint Entertainment and our resident fangirl for all things Pretty Little Liars. Follow her on Twitter and Google+!