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 death situation.

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

Kira and her mother make a journey to help Kira deal with her dark side; Lydia is surprised at Eichen House.

Scott struggles to balance his new life as a werewolf and the pressures of being a teen, all while avoiding werewolf hunters and trying to score a second date with Allison.

On the night before Halloween, Mischief Night, a convicted murderer brought to Beacon Hills Hospital for surgery escapes, forcing Scott and his friends to step in to help when his unexpected target becomes clear.

Scott, Stiles, Lydia, Malia, and Liam are trying to figure out how to defeat the Beast of Gévaudan that the Maid of Gévaudan, Marie-Jeanne Valet, faced in 1765. As Gerard Argent, recounts Valet’s story to Scott’s pack in hopes they can deduce the creature’s weaknesses.

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

There's another animal attack involving Lydia and Jackson, raising more questions about wild animals. Meanwhile, Scott and Allison skip school and Derek must deal with the werewolf hunters on his own.

Even without the support of his pack, Scott considers what the Dread Doctors' success means for Beacon Hills.

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.

As Scott tries to put his pack back together, Malia and her new ally set out to rescue Deaton from The Desert Wolf.

Scott and Allison end up in a group date; an animal attack has Stiles' sheriff father on the lookout.

Scott tries to control his transformation so he can spend more time with Allison. Elsewhere, Derek continues trying to make an ally of Scott.

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

Scott tries to keep Derek from creating new werewolves; Argent officially begins Allison's training; the new creature in town takes another victim.

When one of their friends goes missing, Scott and the pack travel into Mexico on a search and rescue mission.

Scott finds himself turning to an unlikely ally for help. Stiles and Lydia attempt to find out the truth about Parrish.

Scott, Lydia and Malia search for clues about the Wild Hunt in a mysterious place called Cannan while Liam and and Hayden take drastic measures in the fight against the Ghost Riders.

During a secret concert, Scott and Stiles come up with a method to trap the new shapeshifter. At the same time, Allison's mother comes up with a plan of her own to take care of Scott once and for all.

The secret behind Derek's tattoo is revealed and the Alpha pack make their presence known. Derek and Isaac struggle to locate Erica and Boyd.

Scott and his pack use a charity lacrosse game in a deadly gambit to figure out the identity of the Beast.

With the identity of the Beast finally revealed, Scott and his friends are in a race against time to stop The Dread doctors from implementing their final plan.

The hunt is on for Derek's whereabouts, meanwhile Stiles tries to help Scott with controlling his transformation when a second full moon is approaching.

With Boyd and Cora on the loose and under the influence of the full moon, Scott and Derek must turn to an unlikely ally for help.

A dangerous enemy forces Scott to help him. Derek and Malia track down an old ally.