When a guest turns up dead at the newly-opened Pinnacles Grand Hotel, ISB agent Felicity Harland finds herself summoned to a peculiar scene. A gentle breeze blows in from the balcony window, belying the violence of a man stabbed to death in his hotel room. It´s clear to Harland that this murder was personal, especially when the victim´s wife admits that she wanted him dead. But Harland isn´t so sure that this was a domestic dispute gone bad. When she hears about the Park Service searching for a missing person out on the trails, she sets out with her partner, Ferdinand ´Hux´ Huxley, to see if the two cases are connected. As Harland and Hux take on the rocky, exposed terrain of California´s ancient volcanic wonderland, they soon realize that the mystery at the Pinnacles Grand is not at all what it seems - and that a predator may be closing in.