What happens when the Vampire Acadmey crew meet up with the people who have saved the world multiple times? Thats right, none other than our favourite detecting pair, Skulduggery Pleasant and Valkyrie Cain. Madness ensures as Rose and Lissa, as well as the others, help Skulduggery and Valkyrie solve yet another mystery. Set after Kindom of the Wicked and Last Sacrafice. Please R&R.