Agatha Christie, was an english detective novelist and playwright. Her books have sold more than 100 million copies and have been translated into some 100 languages. Agatha Christies´ most famous novels include And Then There Were None; Murder on the Orient Express; The ABC Murders and many others. In addition to her celebrated Poirot and Miss Marple, Christie also created amateur detectives Thomas Beresford and his wife, Prudence.