Maggie Grace (The Fog, Taken, “Lost”) will play a new vampire threat to Kristen Stewart’s Bella in The Twilight Saga: Breaking Dawn, reports Deadline. Grace will play the role of Irina in the final installments of the Stephenie Meyer novel, which director Bill Condon is directing in two separate films. 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. The first of two pictures will be released by Summit Entertainment on November 18, 2011, followed by the finale on November 16, 2012. Melissa Rosenberg is writing both scripts.