TEXT: LYDIA: Previously on Teen Wolf... The Mute: (DISTORTED VOICE) Hello, Sean. I just killed your family. Stiles: Lydia wrote these? Scott: You got kicked out, didn't you? Stiles: That's good. You kissed her. Scott: Get back! Araya: When you take the bite of an innocent, I will come knocking at your door. (SCREAMING) (MUSIC PLAYING) (POLICE RADIO CHATTER) Sheriff: Hey, let's get everyone off the roof. And see if you can stall the ME for five minutes.I've got an expert of my own coming to take a look. Deputy Parrish: You have an expert on teenage cannibals? Sheriff: Five minutes, Parrish. Deputy Parrish: Hey. Sheriff: Uh, I guess you've been there long enough to hear we need to be quick about this. Scott said he called himself a wendigo. Derek: Cannibalistic shape-shifters. But I haven't heard of them in Beacon Hills for a long time. Must have been well-hidden. How many people did Scott say were up here? Sheriff: Just Sean and the axe-murderer who apparently has no mouth. You wouldn't know anything about that, would you? Derek: There was someone else. Someone young. And male. Sheriff: You can smell his fear? Derek: And his blood. Stiles: Like I said, I told my dad everything I could. Scott: But you didn't tell him about Liam? Stiles: You barely told me about Liam. What did you do with him anyway? Scott: He's upstairs. Stiles: Doing what? Scott: Lying down. (PANTING) (MUFFLED GRUNTING) Stiles: So you bit him. Scott: Yeah. Stiles: And you kidnapped him. Scott: Yeah. Stiles: And brought him here. Scott: I panicked. Stiles: Yup. This isn't going to end with us burying the pieces of his body out in the desert, is it
SUMMARY:
Peter is attacked and injured by the Mute. Scott and his friends attempt to plan a way to help Liam deal with the upcoming full moon. Deputy Parrish, Sheriff Stilinski and Derek discover that the Mute is an assassin hired by someone called the Benefactor. Scott and his friends lock up Liam and Malia at Lydia's lake house; unfortunately, Liam texted his friends that there was a party at the house. Lydia deals with the party, and discovers a soundproofed room in her house. Derek and Sheriff Stilinski locate the Mute at the high school, and avoid a claymore mine that the Mute planted. Peter eventually appears and kills the Mute. Stiles is able to help Malia gain control over her shift. Liam escapes, but Scott is able to subdue him with help from Chris Argent. At the party, a werewolf is killed by Violet, an agent of the Benefactor, along with her boyfriend Garrett. Lydia manages to decipher the code in the Mute's computer, using the keyword "ALLISON", which reveals that it's actually a " dead pool ", a hit list of supernatural beings living in Beacon Hills, which includes all of their supernatural friends.