The thirteenth thrilling novel in the internationally bestselling Skulduggery Pleasant series, SEASONS OF WAR will test the Skeleton Detective and Valkyrie like never before...

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 onl ...