Air date: 2012-06-03

Runtime: 42 min

When Lydia goes missing from the hospital, werewolves and hunters begin a search.

Air date: 2012-06-04

Runtime: 43 min

Isaac's father is murdered; Scott, Stiles and Derek plan a break-out. At the same time, the Argent family remove the principal and Allison's grandfather replaces him. Scott senses that another werewolf is in the lacrosse locker room and plans to sniff them out, literally.

Air date: 2012-06-11

Runtime: 43 min

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

Air date: 2012-06-18

Runtime: 43 min

When the new shapeshifter strikes again, Scott has to recruit a reluctant Allison to acquire a rare book in Gerard's collection, while also once again surviving dinner with her family.

Air date: 2012-06-25

Runtime: 43 min

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

Air date: 2012-07-02

Runtime: 42 min

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.

Air date: 2012-07-09

Runtime: 43 min

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 as a new Alpha.

Air date: 2012-07-16

Runtime: 43 min

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.

Air date: 2012-07-23

Runtime: 43 min

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.

Air date: 2012-07-30

Runtime: 42 min

Scott, Stiles, Melissa and Stillinski are taken hostage; Allison tracks Derek to the station.

Air date: 2012-08-06

Runtime: 42 min

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.

Air date: 2012-08-13

Runtime: 43 min

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.