Death Bringer (Skulduggery Pleasant, Book 6)

The Necromancers no longer need Valkyrie to be their Death Bringer, and that's a good thing. The catch? They don't need her any more because they've found their Death Bringer already, the person who will dissolve the doors between life and death. And that's a very, very bad thing ... The Necromancers no longer need Valkyrie to be their Death Bringer. There's a reason they don't need her any more. And that's because they've found their Death Bringer already, the person who will dissolve the doors between life and death. Book #6