Last Stand of Dead Men (Skulduggery Pleasant 8)

War has finally come. Not a war between good and evil, or light and dark, but a war between Sanctuaries.
Skulduggery and Valkyrie must team up with the rest of the Dead Men if they're to have any chance of maintaining the balance of power and getting to the root of a vast conspiracy that has been years in the making.
And at the same time, another war rages within Valkyrie herself, as Darquesse is on the verge of rising, and if Valkyrie slips, even for a moment, Darquesse will burn the world and everyone in it.