When teenager Scott McCall is convinced by his best friend, Stiles, to join a search in the woods for a missing body, something comes out of the darkness to take a bite out of his side.

Not aware that he has become a werewolf, Scott must deal with both hunters trying to catch him, another werewolf named Derek Hale and the pressure of normal teen life, all while trying to figure out how to play his first lacrosse game.

Scott's first date with Allison ends up in confusion and turns into a dreaded "group date" with Lydia and Jackson in tow.

The arrival of a surprising new hunter in town puts Derek's life in danger, forcing him to make reluctant allies out of Scott and Stiles.

A new animal attack involving Lydia and Jackson raises more questions among authorities about wild animals.

Scott and Stiles come up with ways for him to control the transformation in order to be with Allison, while Derek continues trying to make an ally of Scott in both his battle with the hunters and in his goal to find a mysterious figure both sides are tracking.

When Derek is savagely attacked by the Alpha, Scott, Stiles and their friends find themselves trapped in Beacon Hills High School at night, where they face both questions and suspicions about each other.

With Derek on the run from Sheriff Stilinski and his department, Stiles must help Scott face his second full moon as a werewolf.

Clues, including a prior encounter with Derek, bring Jackson to a dangerous revelation about Scott.

With startling revelations weighing in on him, Scott finds himself scrambling to protect the people he loves, including Allison who begins to follow clues left by her Aunt Kate about her family history.

While struggling with her family's secrets, Allison turns her focus to Scott and the Winter Formal dance.

Scott McCall, caught in the middle of a war between hunters and werewolves, discovers one last clue which allows him to enlist both friends and even a previous enemy in order to stop the mysterious killings in Beacon Hills and win back Allison.

When Lydia suffering from hallucinations goes missing from the hospital, werewolves and hunters alike begin a search to discover not only where she is, but what she may have become.

The night before the new full moon, Isaac's father is murdered by a strange creature.

Scott struggles to stop Derek from creating new werewolves, while Chris Argent decides to officially begin Allison's training as a hunter.

When the new shapeshifter strikes again nearly claiming Stiles and Derek Scott has to recruit a reluctant Allison to acquire a rare book from Gerard's collection, while also once again surviving dinner with the Argents.

Derek becomes convinced that Lydia is the shapeshifter they're after since she seemed immune to its toxin, forcing Scott to gather his friends and even some enemies to protect her from the Alpha.

With startling new information about the shapeshifter, Scott and Stiles hurry to protect their friends while Allison is given an investigative task by her family.

As Lydia begins to make connections about the bite from Peter, Jackson causes new problems for Scott and Stiles while Derek has a crisis of faith in his leadership abilities as a new Alpha.

During a secret concert, Scott and Stiles come up with a method to trap the new shapeshifter.

Stiles comes to a major realization about the murder in Beacon Hills and a possible connection to Isaac.

With a shocking secret revealed, Scott, Stiles, Melissa and Stilinski are taken hostage in the Sheriff's Station.

Scott must help win the championship lacrosse game while also trying to figure out how to stop Gerard.

Even though everyone is still reeling from a shocking death on the lacrosse field, Scott and his friends rush to figure out Gerard's master plan while Derek plots to take him down using his own methods.

Boyd and Erica are still missing, Jackson moved to London with his father, and while Allison was on vacation in Europe.

Allison and Lydia stumble upon a possible clue to finding Boyd and Erica.. though one of them might already be dead, and while a childhood friend of Stiles goes missing.

While under the influence of the full moon, Boyd and Cora are still on the run.

Stiles has found a pattern and is certain that the killings have absolutely nothing to do with werewolves.

During a bus ride to a cross country meet, Scott and his friends flash back to the events of a preemptive strike against the Alphas that has left several injured and possibly one or more dead.

Stranded at a motel in Fairvale, California for the night because of a postponed cross country meet, Scott, Stile, Allison and Lydia suffer strange experiences that cause them to believe members of their own group may the mysterious killer's newest targets.

As Beacon Hills seems to be nothing but chaos and the danger begins to move closer to Scott , his trusted mentor and boss, Deaton, is threatened.

While Scott is now aware that Deucalion is after him and not Derek, he actually knows very little about this dangerous adversary and he turns to an unlikely source for information: Gerard.

Tensions mount in Beacon Hills. Sheriff Stilinski is still baffled by the murders, and just Allison begins to suspect someone dangerously close to her may be involved in the murders, she uncovers a well-kept secret from her father.

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

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.

In the exciting mid-season finale, the lunar eclipse is imminent, and it may leave a weakened Derek at the mercy of the Alphas.

Three weeks after saving the lives of their parents, Scott, Stiles and Allison begin to understand Deaton's warning about serious consequences.

Scott and Stiles continue to try to solve Malia Tate's mysterious disappearance.

Scott finally wants to make a fresh start in love, leaving his feelings for Allison.

When Isaac describes the hooded figures that attacked him to Allison and her father, it has the surprising benefit of drawing him and Allison closer.

Scott's friends pledge to protect him against an increasingly hostile enemy, while Argent, Isaac and Allison search Argent's past for answers to the shadow creatures.

After being haunted for some time by problems sleeping and terrible hallucinations, Stiles mysteriously vanishes on night.

The Nogitsune makes Beacon Hills his playground and it doesn't take long for chaos to engulf in the city.

Stiles is put into a mental hospital named Echo House where he believes he will be safe from the Nogitsune.

While Allison, Derek , Chris and Sheriff Stilinski try to track down Nogitsune, Kira's mother relates the story of the Nogitsune she came to know and, in the process, reveals a long-held secret about herself.

With the Nogitsune still in control of their friend Stiles, Scott and Lydia find an unlikely ally in Peter Hale.

Scott and company race to rescue Lydia from the clutches of evil and get help from a young woman who has escaped from the metal hospital and seems to have the ability to communicate with Lydia.

In the exciting Season 4 finale, the Nogitsune has taken control of nearly all of Beacon Hills and the culmination of master plan seems inevitable.

Scott and his Pack journey into Mexico to rescue a missing friend.

Scott must turn to an unlikely ally in order to stop Kate's plan.

A new Freshman player threatens Scott's position on the Lacrosse team. Stilinski investigates a brutal murder.

Uninvited guests arrive at Lydia's lake house on the night of the full moon.

As another name is scratched off the list, Lydia is required to find the second key, thus revealing more targets.

With Violet's arrest, Garrett forces Scott to help get her back by using Liam as a bargaining chip.

A frantic call to the CDC has everyone paranoid, especially since it was designed to target werewolves.

With Noshiko's help, the team come up with a plan hoping to reveal the benefactor's identity.

After a vain attempt to kill Parrish, it's clear that almost everyone has access to the dead-pool.

Scott and Kira fight to protect Satomi's pack from assassins. Stiles and Malia learn the origins of The Dead Pool.

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

Scott and Stiles return to La Iglesia in order to save the pack from Kate.

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 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 Gevaudan. 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 Canaan while Liam and Hayden resort to 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.

Scott, Lydia and Malia have to take drastic measures to quell the growing violence in Beacon Hills, while Liam endures his own gauntlet at the high school.

When Scott and the others try to protect two new werewolves, an unlikely ally joins the fight.

Liam and Theo attempt to draw the Hunters away from Beacon Hills.

After a shocking attack leaves the pack reeling, Scott sets out to recruit reinforcements.

Scott and the others must make a discovery before it’s too late.

Scott and Malia prepare for battle while Argent searches for an old ally.

Gerard initiates his final attack on the Supernaturals of Beacon Hills.