Agatha Christie was born in Torquay in 1890 and became the best-selling novelist in history. Her first novel, The Mysterious Affair at Styles, introduced us to Hercule Poirot, the most popular detective since Sherlock Holmes. She is known throughout the world as the Queen of Crime and her works have sold over two billion copies - 80 crime books, 19 plays, and six novels under the name of Mary Westmacott. Charles Osborne was born in Brisbane in 1927. He is known internationally as an authority on opera, though has had a lifelong passion for Agatha Christie's works. His previous books include the newly revised and reissued The Life and Crimes of Agatha Christie.