Teen Wolf: Season 2, Episode 4

2 - 4: Abomination

When Stiles takes his jeep in for repair, he is paralyzed by the creature's toxin and witnesses it kill the mechanic. Jackson discovers there are actually over 2 hours of missing footage from the night he recorded himself. The creature attacks Derek and paralyzes him. Derek falls into the pool and Stiles jumps in to save him. They discover the creature cannot swim, so they stay in the water until Scott saves them. Derek realizes that the creature is a Kanima. Gerard reveals he knows Scott's secret and blackmails him.