Agatha Christie is known throughout the world as the Queen of crime. Her books have sold over a billion copies in the English language with another billion in 44 foreign languages. She is the most widely published author of all time in any language, out-sold by only the Bible and Shakespeare. She is the author of 79 crime novels and a short story collections, 19 plays, and 6 novels written under the name of Mary Westmacott.