On the night before the start of Senior Year, Scott and his Pack are challenged by the arrival of a new enemy and the return of an old friend.
Stiles tries to prove his suspicions about a new classmate while Lydia helps a student with night terrors.
Scott tracks a dangerous new shapeshifter threatening Stilinski. Malia receives information about her mother's identity.
Stiles tries to track down a fugitive. Liam tries to play wingman to Mason at a nightclub.
The Pack goes into Eichen House to learn more about The Dread Doctors.
Scott and his friends experience strange effects after following Dr. Valack’s advice.
Scott’s plan to protect the newest victim goes awry when The Dread Doctors attack.
Scott and Malia attempt to rescue their captured friends. Deaton makes a horrific discovery about The Dread Doctors.
While Scott turns to an unlikely ally for help, Stiles and Lydia try to uncover the truth about Parrish.
Scott and his pack face their greatest enemy yet, with both lives and friendships on the verge of being destroyed.
Scott and Stiles must strive to figure out what’s behind the mysterious infection that’s killing the town sheriff in spite of their deep rift.
Without the support of his pack, Scott confronts what the Dread Doctors’ deadly success means for Beacon Hills.
Kira and her mother travel take extreme measures to help Kira deal with her dark side while Lydia is surprised at Eichen House.
As Scott tries to put his pack back together, Malia and a new ally set out to rescue Deaton from The Desert Wolf.
After discovering Lydia is in imminent danger, Stiles creates a desperate plan to break her out of Eichen House. Unbeknownst to Scott and his pack, however, Theo has his own plans for Lydia.
Trapped in Eichen House with Theo and his Chimera Pack, Scott must try to rescue Lydia before it’s too late.
Scott and his pack use a charity lacrosse game in a deadly gambit to figure out the identity of the Beast.
Hoping to align with a familiar ally, the Argents reveal a key clue to the mystery of the Beast of Gévaudan. Meanwhile, Scott tries to take on the Beast himself.
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.
Loyalties are tested and new alliances forged as Scott and his friends work to stop the Beast before Beacon Hills is razed to the ground.
With graduation approaching, a supernatural force rides into Beacon Hills and crosses paths with Scott and his friends, while Liam discovers evidence of a new enemy in the high school.
While Scott, Lydia and Malia search for lost memories of a missing friend, Corey discovers a connection between his abilities and the Wild Hunt.
While Scott, Lydia and Malia search for Stiles, Liam and the others throw a party to keep a friend safe from the Ghost Riders.
Scott and Liam protect the lacrosse team from an attack by the Ghost Riders while Lydia searches for clues that lead her closer to finding Stiles.
Trapped inside the Wild Hunt, Stiles reunites with an unexpected ally while Scott, Lydia and Malia discover Stiles's Jeep may be connected to his disappearance.
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.
Scott and Liam attempt to capture a Ghost Rider while Malia and Peter search for a way into the Wild Hunt.
Running out of time, Scott, Lydia and Malia decide to storm the rift in a desperate attempt to get Stiles back. Liam, Hayden and Mason make a deal with Theo in order to learn Douglas's real plan.
While Liam and Theo act as decoys, Scott, Lydia and Malia enact a desperate plan to try and remember Stiles.
With the fate of Beacon Hills hanging in the balance, Scott and his pack face off against Douglas in a final showdown.
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.
While Scott and the others desperately pursue a missing werewolf, Melissa and Argent investigate the nature of a strange body.
