Sister. [Scott McCall] - Rewriting

Stiles. A motherless boy who's father kept the secret of his sister. His twin sister. Fraternal, of course. The fact that Grace Stilinski was kidnapped at the age of three was hidden from Stiles. Almost no one remembered.
While off trying to figure out pieces of Stiles' Nogitsune, Derek Hale finds a girl who claims to be Grace Stilinski. Unsure of her, he used his instincts only to find that she and Stiles smelled identical. He brought her to the station, only leaving her long enough to call Scott.

Showing up at home sets many forces into play, including Scott's inner wolf. Follow the dramatic supernatural tale as the teenagers fight for their lives against the creature possessing Stiles.

No, it may not go along perfectly with 3B but it WILL also go into Season 4. None of the main characters are mine except for Grace. No, Scott and Kira are not going to be a couple. I am going to have Stiles and Malia but Kira is just going to be a close friend of Scott's. :-)