Future London was razed to the ground when the gate separating the human world from the demon world ruptured. Overrun by ungodly and ravenous creatures, the stinking remains of this dead city may hold the key to humanity's survival-and so the quest for the secret of the Sigil continues! Commander Jessica Sumerisle, Crowe Jane, and Saul Petrus have reluctantly teamed together in the hunt to decipher this arcane symbol. Now exploring an ancient labyrinth under London, they come face-to-face with an ocean of the undead, but the deadliest foe of all is one they least expect!