1 Omega

Allison's father forbids Scott and Allison to be together. They don't listen and try their best to disobey him. Meanwhile, Lydia goes missing from the hospital and werewolves and hunters go searching. Derek begins recruiting for his Teen Wolf Pack.

2 Shape Shifted

Isaac Lahey's father is murdered the night before a full moon. Scott, Stiles and Derek plan a break-out.

3 Ice Pick

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

4 Abomination

The new shape-shifter strikes again, and Scott recruits a reluctant Allison to acquire a rare book in Gerard's collection.

5 Venomous

Derek becomes convinced that Lydia is the shape-shifter forcing Scott to protect her. The Kanima is revealed.

6 Frenemy

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.

7 Restraint

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

8 Raving

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.

9 Party Guessed

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

10 Fury

Allison tracks Derek to the sheriff's department, where Scott, Stiles, Melissa and Sheriff Stilinski are being held hostage.

11 Battlefield

Scott plays in the championship lacrosse game and still must find a way to stop Gerard. Allison continues to pursue her vendetta against Derek.

12 Master Plan

Scott races to uncover Gerard’s master plan following a shocking death on the lacrosse field. Meanwhile, Derek plots to take Gerard down using his own methods.