1 The Dark Moon

Scott searches for a missing friend in Mexico in the Season 4 premiere.

2 117

Scott turns to an unlikely ally in order to stop Kate.

3 Muted

Scott's position on the lacrosse team is threatened. Meanwhile, Stilinski investigates a murder.

4 The Benefactor (Teen Wolf Episode)

On the night of the full moon, uninvited guests turn up at Lydia's lake house; Derek pursues a killer.

5 I. E. D.

Lydia seeks help with her powers; Scott, Stiles and Kira play in their first lacrosse game.

6 Orphaned

Scott is forced into helping a dangerous enemy; Derek and Malia track an old ally.

7 Weaponized

The school is overtaken by a mysterious outbreak.

8 Time of Death

Scott carries out a dangerous plan. Meanwhile, Malia confronts her past.

9 Perishable

An assassin targets Scott and Liam at the lacrosse team's annual bonfire. Lydia uncovers a family secret. The Benefactor's identity is revealed.

10 Monstrous

Scott and Kira protect the remnants of Satomi's pack while Malia and Stiles team up to uncover the origins of the Dead Pool.

11 A Promise to the Dead

Scott battles an old enemy.

12 Smoke & Mirrors

Stiles, Malia and Derek return to La Iglesia to save Scott from Kate.