And the Crooked Man heard her dreams, because that was where he wandered. His place was the land of the imagination, the world where stories began. The stories were always looking for a way to be told, to be brought to life through books and reading. That was how they crossed over from their world into ours. But with them came the Crooked Man, prowling between his world and ours, looking for stories of his own to create, hunting for children who dreamed bad dreams, who were jealous and angry and proud. And he made kings and queens of them, cursing them with a kind of power, even if the real power lay always in his hands. And in return they betrayed the objects of their jealousy to him, and he took them into his lair deep beneath the castle...
~ John Connolly