How many books did Agatha Christie author?
79: 1920 The Mysterious Affair at Styles (her first book, which introduced Hercule Poirot) 1922 The Secret Adversary (introduced Tommy and Tuppence) 1923 Murder on the Links 1924 The Man in the Brown Suit 1925 The Secret of Chimneys 1926 The Murder of Roger Ackroyd 1927 The Big Four 1928 The Mystery of the Blue Train 1929 The Seven Dials Mystery 1930 The Murder at the Vicarage (introduced Jane Marple) 1930 The Mysterious Mr Quin (introduced Mr Harley Quin) 1931 The Sittaford Mystery 1932 Peril at End House 1933 The Hound of Baskerville (twelve short mysteries) 1933 Lord Edgware Dies 1934 Murder on the Orient Express 1934 Parker Pyne investigates (twelve short mysteries) 1934 The Listerdale mystery (twelve short mysteries) 1935 Three Act Tragedy 1935 Why didn’t they ask Evans? 1935 Death in the Clouds 1936 The A.B.C. Murders 1936 Murder in Mesopotamia 1936 Cards on the Table 1937 Death on the Nile 1937 Dumb Witness 1938 Appointment with Death 1939 Ten Little Niggers (also known as And T
