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 .
Fans and lore suggest these insects foreshadow the Nogitsune (the Season 3B villain), who is later associated with supernatural flies. 🐺 Key Character Beats FirefliesTeen Wolf : Season 3 Episode 3
The fireflies in Beacon Hills are more than just background atmosphere: Lydia finds herself in a "fugue state," unconsciously
Chris Argent points out that California fireflies are typically not bioluminescent. Their sudden, bright glow indicates a massive surge in local supernatural energy . FirefliesTeen Wolf : Season 3 Episode 3