Scott, Derek, and Isaac team up with Chris Argent , an unlikely ally who uses his hunter expertise to track the werewolves without killing them.
To protect a new teacher, Jennifer Blake , Derek locks himself in the high school boiler room with Boyd and Cora. He refuses to fight back, enduring a brutal mauling until sunrise to keep them contained. FirefliesTeen Wolf : Season 3 Episode 3
Lydia finds herself in a "fugue state," unconsciously driving to a swimming pool where she discovers a body—the first clear hint of her identity as a Banshee . Scott, Derek, and Isaac team up with Chris
Early in the episode, a jar of fireflies shatters near Boyd. The swarming light momentarily distracts him, allowing two young children to escape his attack. FirefliesTeen Wolf : Season 3 Episode 3