Seasons of War

War is coming.

To avert catastrophe, Skulduggery and Valkyrie
are sent on a secret mission that takes them away from everything they
know, to a forsaken land of magic and grim, unrelenting terror. It is
here that Valkyrie will have to fight the hardest — not only against the
enemies who want her dead, but also against her own self-destructive
impulses. It's only by crawling through darkness that she'll be able to
once again stand in the light.