Agatha Christie

The heiress of Styles has been murdered, dying in agony from strychnine slipped into her coffee. And there are plenty of people who would gain from her death: the financially strapped stepson, the gold-digging younger husband, and an embittered daughter-in-law. Monsieur Poirot comes out of retirement to figure out who would have the impudence--and the motive--to commit the crime. In this book Agatha Christie's eccentric and hugely popular detective, Hercule Poirot, was introduced to the world, launching her career as the most famous and best-loved of all mystery writers.