Jackson seeks out a specialist regarding the wound on his neck.

Scott and his Pack begin a dangerous battle against an old enemy.

In hopes of learning more about the Dread Doctors, the pack goes into Eichen House.

Scott and Stiles try to learn what is behind the mysterious infection that is killing the town sheriff.

As Scott readies Beacon Hills for his imminent departure, a mysterious presence breaks out of Eichen House.

Scott and Malia search for the owner of a unique bullet, fearing that a new breed of werewolf hunter has come to Beacon Hills. At the same time, Lydia must face her own fears of Eichen House.