Nursery rhymes, the deep dark secret.

In the canon of great horror writing, Stephen King, Edgar Allan Poe, H.P. Lovecraft, Bram Stoker, and Mary Shelley tend to dominate the craft. But Mother Goose isn’t too far behind. Yes, that fictional grande dame of kiddie poems has got a bit of a dark streak, as evidenced by the unexpectedly sinister theories surrounding the origins of these 11 well-known nursery rhymes.

http://mentalfloss.com/article/55035/dark-origins-11-classic-nursery-rhymes