Christie had long been a fan of detective novels, having enjoyed Wilkie Collins' The Woman in White and The Moonstone as well as Sir Arthur Conan Doyle's early Sherlock Holmes stories. She wrote her own detective novel The Mysterious Affair at Styles featuring Hercule Poirot; portrayed as a former Belgian police officer noted for his twirly large "magnificent moustaches" and egg-shaped head, who took refuge in Britain after Germany had invaded Belgium. Christie's inspiration for this stemmed from real Belgian refugees who existed in Torquay.