There is a barrier between this world and the worlds of fantasy and terror. Fourteen-year-old Martin Kelly has until Halloween to keep that barrier from collapsing. A centuries-old spirit has slipped through the veil and brought with him a warning. Forces are gathering on the other side-their sights set on annexing the realm of man. Led by an ambitious dark soul who has already brought many realms to heel, their power is growing. That power is fear. Martin must gather the tools, and the team, necessary to shift the balance of power and keep the mortal world from being overrun.