Stiles goes missing; Scott and the others set off on a search; Lydia tries to master her new abilities.

Under Deaton’s advice, Scott and his friends use an ancient but extremely dangerous ritual to help them both save the lives of the people they love and stop Deucalion from achieving his sinister goal.

Kira faces an unexpected enemy.

Scott and Derek call upon their friends and allies to make a last stand.

Trapped within the Wild Hunt, Stiles reunites with an unexpected ally; Scott, Lydia and Malia learn that Stiles' Jeep may be connected to his disappearance.

Stranded at a motel for the night because of the postponed cross country meet, Scott and the others suffer strange experiences that cause them to believe members of their own group may the mysterious killer’s newest targets.

With the threat growing far more personal and time running out on innocent lives, Scott is forced to make a difficult choice in order to save both friends and family while, at the same time, Derek and Peter try to figure out how to save Cora’s life.

The fate of Beacon Hills hangs in the balance as Scott and his pack face off against Douglas in a final showdown.

Scott and Lydia join forces. Meanwhile, Stilinski faces a review board.

Scott, Lydia and Malia decide to storm the rift and rescue Stiles; Liam, Hayden and Mason make a deal with Theo to learn Douglas' plan.

Beacon Hills is under curfew from the power outage; the teens throw a blacklight Halloween party; Scott tries to earn Kira's trust.

Scott and the others seek an important artifact; Stiles must make a decision about Eichen House.

While Scott, Lydia and Malia search for lost memories of a missing friend, Corey discovers a connection between his abilities and the Wild Hunt.

Scott, Lydia and Malia search for Stiles; Liam and the others throw a party in order to keep a friend safe from the Ghost Riders.

Scott and Liam make an attempt to capture a Ghost Rider; Malia and Peter try to find a way into the Wild Hunt.

Derek becomes convinced that Lydia is the shapeshifter they're after, forcing Scott to gather his friends -- and even some enemies -- to protect her.

Even as his relationship with Allison becomes further strained, Scott and Stiles must attend Lydia's birthday party while Derek locks his new wolves up to watch after them on their first full moon together.

Scott plays in the championship lacrosse game and must figure out a way to stop Gerard. Meanwhile, Allison continues her hunt for Derek and his pack.

Scott races to uncover Gerard's master plan following a shocking death on the lacrosse field. Derek plots to take Gerard down using his own methods. Erica and Boyd are captured as Allison continues her merciless bloodthirsty revenge on the werewolves for her mother's suicide. Meanwhile, Scott, Stiles, Lydia, Melissa and Isaac are all under pressure amidst the chaotic events.

As Allison begins to suspect someone dangerously close to her may be involved in the murders, Scott and Stiles conclude that Lydia’s rising talents may be their best bet to solving the murders.

Trapped inside an evacuated Beacon Hills hospital by a powerful storm, Scott and Derek must defend themselves against the Alphas while trying to figure out how to save Cora’s life.

Scott's friends pledge to protect him against an increasingly hostile enemy while Argent, Isaac and Allison search for answers through an old adversary from the Japanese Yakuza. At the same time, Stiles enlists Melissa's help in figuring out exactly what's going on with him.

Scott and the others try to prevent a disaster; Lydia and Allison seek out an unlikely teacher.

Scott and Stiles return to La Iglesia to save the Pack from Kate.

Scott, Stiles and Allison suffer side effects from the ritual sacrifice; Sheriff Stilinski searches through old cases.