Inferno is a 2013 mystery thriller novel by American author Dan Brown and the fourth book in his Robert Langdon series, following Angels & Demons, The Da Vinci Code and The Lost Symbol.
Agatha Christie was born in 1890 and created the detective Hercule Poirot in her debut novel, The Mysterious Affair at Styles (1920). She achieved wide popularity with The Murder of Roger Ackroyd (1926) and produced a total of eighty novels and short-story collections over six decades.
