John Connolly said this quote
“ These stories were very old, as old as people, and they had survived because they were very powerful indeed. They were the tales that echoed in the head long after the books that contained them were cast aside. They were both an escape from reality and an alternative reality themselves. They were so old, and so strange, that they had found a kind of existence independent of the pages they occupied. The world of the old tales existed parallel to ours, but sometimes the walls separating the two became so thing and brittle that the two worlds started to blend into each other. That was when the trouble started. That was when the bad things came. That was when the Crooked Man began to appear to David. ”