Fra forlagets omtale: The year is 1892 and London is in the grip of evil. A demonic terror grips the streets, wreaking chaos as it helps the Legion, a vicious underground gang, to raise Hell on earth. Only the Watchers, a secret society of urchins and warriors, can stop them. An ancient prophecy claims one boy, Ben Kingdom, has the power to end this war. But Ben has a secret so deadly it could destroy everything the Watchers have worked for