Laura Hale

Lauren Hale was the sister of Derek Hale. She was torn to pieces, presumably by the Alpha. The search for her body is the point from which all other action in the show begins. Scott McCall is bitten by the Alpha while searching for her remains, thus turning him into a werewolf.

Lauren was an alpha werewolf, meaning that she could become a full wolf. This a sharp contrast to her brother who is a beta, a more human wolf. The majority of their family was killed in a fire, with the exception of her comatose uncle, Peter Hale.