Scott races to uncover Gerard's master plan following a shocking death on the lacrosse field in the Season 2 finale. Meanwhile, Derek plots to take Gerard down using his own methods.
Scott plays in the championship lacrosse game and must also figure out a way to stop Gerard. Meanwhile, Allison continues her hunt for Derek and his wolves.
Season 2, Episode 10
Allison tracks Derek to the sheriff's station, where Scott, Stiles, Melissa and Sheriff Stilinski are being held hostage.
Scott and Stiles attend Lydia's birthday party, while Derek locks his new wolves up on their first full moon together.
Season 2, Episode 8
Scott and Stiles develop a plan to trap the new shapeshifter, while Allison's mom comes up with a plan of her own to take care of Scott once and for all.
Season 2, Episode 7
Lydia begins to make connections about the bite from Peter, causing new problems for Scott and Stiles. Meanwhile, Derek has a crisis of faith in his leadership as a new alpha.
Season 2, Episode 6
Scott and Stiles race to protect their friends after receiving startling new information about the shape-shifter. Meanwhile, Allison is given an investigative task by her family.
Season 2, Episode 5
Derek becomes convinced that Lydia is the shape-shifter, and forces Scott to help him protect her.
The new shape-shifter strikes again, and Scott recruits a reluctant Allison to acquire a rare book in Gerard's collection.
Season 2, Episode 3
Scott tries to keep Derek from creating new werewolves; Argent officially begins Allison's training; the new creature in town takes another victim.
Isaac's father is murdered the night before a full moon.
Season 2, Episode 1
Lydia goes missing from the hospital and both werewolves and hunters try to find her in the Season 2 opener.