Adam Thorne founded the Segue Institute to study and destroy his monster of a brother, but the key to its success is held in the pale, slender hand of a woman on the run. There is something hauntingly different about Talia O'Brien, her unknowing sensuality, her uncanny way of slipping into Shadow. Twilight is the place between life and what comes after- a dark forest of fantasy, filled with beauty, peril, mystery. And Talia is about to open the door.