Skulduggery Pleasant 3-The faceless ones

Now the Faceless ones come up. They existed longlonglong time ago and someone is trying to bring them again. They are very very evil and they are planning to destroy the world. It needs some ingredients to bring them back and Valkyrie's blood is one of them, because she's linked to ancients. Anyway, The faceless ones came back and they found Skulduggery. Skulduggery is captured by them and couldn't come back. Now, Valkyrie is left alone.