The Mysterious Affair At Styles: A Detective Story

It is Christie's first published novel, and introduces Hercule Poirot, Inspector Japp and Lieutenant Hastings. The story is told in first person by Hastings, and features many of the elements that, thanks to Christie, have become icons of the Golden Age of Detective Fiction. It is set in a large, isolated country manor. There are a half-dozen suspects, most of whom are hiding facts about themselves. The book includes maps of the house, the murder scene, and a drawing of a fragment of a will. Also, there are a number of red herrings and surprise plot twists. http://en.wikipedia.org/wiki/The_Mysterious_Affair_at_Styles