War has finally come. But it's not a war between good and evil, or light and dark - it's a war between Sanctuaries. For too long, the Irish Sanctuary has teetered on the brink of world-ending disaster, and the other Sanctuaries around the world have had enough. Allies turn to enemies, friends turn to foes, and Skulduggery and Valkyrie must team up with the rest of the Dead Men if they're going to have any chance at all of maintaining the balance of...

"It's the fourth Skulduggery Pleasant adventure! only Skulduggery Pleasant himself is lost on the other side of a portal, with only some evil gods for company. Can he possibly survive? (Yes, all right, he's already dead. But still.)"--Provided by publisher.

Valkerie. Darquesse. Stephanie. The world ain't big enough for the three of them. The end will come...The War of the Sanctuaries has been won, but it was not without its casualties. Following the loss of Valkyrie Cain, Skulduggery Pleasant must use any and all means to track down and stop Darquesse before she turns the world into a charred, lifeless cinder. And so he draws together a team of soldiers, monster hunters, killers, criminals... and Valkyrie's...