Jackson puts Scott in danger; Allison starts to question her family's strange behavior. Adrian Harris is confronted by the Alpha. When Derek Hale appears to question the professor and capture the Alpha, the cops show up. Scott, driving Derek's car, pulls up in time for a quick getaway. The Argents, as well as the cops, chase Derek. He mentions a note he took from Harris with a strange symbol on it. Scott says he recognizes the symbol from Allison's necklace.