Scott and his pack use a charity lacrosse game in a deadly gambit to figure out the identity of the Beast.

After following Dr. Valack’s advice, Scott and the others begin to experience strange things.

Scott tracks a new shapeshifter that’s threatening Stilinski; and Malia receives information about her mother.

Stiles works on tracking down a fugitive; Liam tries to be Mason’s wingman at a nightclub.

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

Scott and Kira fight to protect Satomi’s pack from assassins.

Scott, Stiles and Kira participate in their first Lacrosse game; Lydia looks to get help controlling her powers.

A seemingly healthy 14-year-old girl collapses during a skateboarding exhibition; House and Cuddy face the challenge of handling their romantic relationship at work.