Skullduggery Pleasant: Dark Days

Valkyrie is on the hunt for Skullduggery's lost head, to use as an Isthmus Anchor to get him out ofthe portal. They find it, and eventually manage to drag him out of the alternate dimension. They soon discover that their main enemies have banded together into a group called: 'the revenger's group'. The evil enemies form a Zombie horde, and begin the hunt for the things they need to destroy the world! How will they be stopped? Will they be stopped? Read to find out!