The Stilinski brothers (updated)

Selena Mccall is the twin sister of Scott Mccall. Selena has been best friends with Stiles' twin brother Flynn since the day they all met. But once her parents got in a fight and got divorced she moved with her dad to New York City. After causing too much trouble in the city with her odd behavior she's moved back to Beacon Hills with her mother and brother. Turns out he's been acting weird too.