Maggie Grace (“Taken”, “LOST”) has joined the cast of the two-part The Twilight Saga: Breaking Dawn. Grace will play the role of the vampire Irina:
Irina is a member of the Denali coven, considered cousins to the Cullen clan as the only other “vegetarian” vampire group. When Irina blames the Cullens for the death of her lover, her actions set in motion a terrifying chain of events.
Source: Deadline