Scott and Liam are targeted by an assassin at the lacrosse team's annual bonfire.
Parrish is burned alive, but doesn't die. He still has no idea what kind of supernatural he is.
Lydia and Stiles figure out what's going on with the dead pool.
The bonfire is a giant mess against the supernaturals.
Brunski is first bribed by Lydia to access the Eichen House files and then revealed to be involved. He killed the names on the list Lorraine left to Lydia.
Parrish saves Lydia and Stiles and Derek and Braeden save Scott, Liam and Malia.
Brunski was being controlled by Meredith. The Benefactor.