The Mysterious Affair at Styles (1921)
by Agatha Christie
The Mysterious Affair at Styles was not only the first mystery book Agatha Christie wrote, it’s also the first one featuring her most popular detective, Hercule Poirot. The novel is set at a country house in the English countryside called Styles, where the narrator, Captain Hastings, is staying with an old friend. Poirot is one of seven Belgian refugees who has been taken in in a nearby village.
