Scott and Malia get help to try to find Hayden and Liam. Deaton discovers something horrific about the dread doctors. Hayden and Liam will be faced with a life and…

Stiles is suspicious about a new girl showing up and what her intentions are. Scott’s plans to protect the newest victim are derailed when The Dread Doctors attack.

After following Dr. Valack’s advice, Scott and the others begin to experience strange things.

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

Stiles works on tracking down a fugitive; Liam tries to be Mason’s wingman at a nightclub.

Scott tracks a new shapeshifter that’s threatening Stilinski; and Malia receives information about her mother.

Stiles is suspicious of a new classmate; and Lydia helps a student with night terrors.

On the eve of senior year, Scott and his pack deal with the arrival of a new enemy and the return of an old friend.