The Mysterious Affair at Styles is a detective novel by Agatha Christie written in 1916, and first published in 1920 to rave reviews. Christie's first published novel, it introduced Hercule Poirot, a Belgian refugee of the Great War, who is settling in England near the home of his wealthy, recently widowed friend Emily Inglethorp. When the widow is found murdered via the administering of poison, Poirot uses his detective skills to solve the mystery....

Linnet Doyle is young, beautiful, and rich. She's the girl who has everything-including the man her best friend loves. Linnet and her new husband take a cruise on the Nile, where they meet the brilliant detective Hercule Poirot. It should be an idyllic trip, yet Poirot has a vague, uneasy feeling that something is dangerously amiss.

A murder in a small English village leads Hercule Poirot into a strange mystery involving a determined, curious spinster, the local doctor, and a wide range of suspects with possible motives and mysterious relationships.

"Hercule Poirot is traveling by luxury passenger coach from London to the exclusive Kingfisher Hill estate. Richard Devonport has summoned the renowned detective to prove that his fiancée, Helen, is innocent of the murder of his brother, Frank. Poirot will have only days to investigate before Helen is hanged, but there is one strange condition attached: he must conceal his true reason for being there from the rest of the Devonport family. The coach...