Christie, a British mystery novelist and playwright known for her detective figures Hercule Poirot and Miss Jane Marple, wrote over 75 novels, including Murder on the Orient Express and And Then There Were None. Her books have been translated into 100 languages and have sold over 100 million copies, and her play The Mousetrap, still running after 23,000 performances, holds the record for longest initial run in theatrical history. What prompted Christie’s 1926 disappearance? Discuss