The quest to find Stiles gets even mysterious one episode after another. As episode 7 dawns, things get even weirder and apparently bloodier for the MTV series "Teen Wolf." If anyone gets the most pressure, that can arguably be Theo (Cody Christian).

In the official sneak peek titled "Can Theo Be Trusted," Theo's reputation precedes him. It appears no one feels he is trustworthy, but, given that there isn't much time and the stakes are high, Liam (Dylan Sprayberry) does his best to convince Scott (Tyler Posey) to give Theo a chance to help locate where Stiles' (Dylan O'Brien) whereabouts are.

Scott tells Liam that he trusts him, but not Theo. Liam agrees on that point, but tries to explain their cause. "This might be a mistake, but you don't know that yet. And you made mistakes when you learned to be an alpha...So we should try anything we can to save him [Stiles], right? Even Theo." After that, Scott reluctantly agrees to let Theo help.

The other teaser, on the other hand, is both creepy and mysterious at the same time. Dubbed as "Theo is Heartless," it describes him, not figuratively, but literally.

It starts with Theo forcing his way out of what appears to be the morgue inside an abandoned hospital. When he makes his way out, he looks behind and finds who could probably be the sister he killed before, heartless. He trips as she tries to rip his heart out, making him heartless as well.

It is mysterious, though, if it was just a vision or if it was reality. If it will happen to him and his sister is resurrected, then it would be a tough time for him surviving through the episode.

"Teen Wolf" season 6 episode 7 will be airing on MTV tomorrow, Jan. 10, at 9 p.m. ET.