She Wolf 《Scott McCall》

Cassandra Stilinski, or Cassy, how her friends call her, is Stiles' twin sister. But Cassy isn't your ordinary sweetheart. She has a secret.

Cassandra is a werewolf. A female True Alpha, too. She was send away when she became one, because she almost killed her brother.

When she was 16 she came back. But her life will change.