Amyas Crale's passion for painting and women made him famous. His murder made him infamous. Beautiful Caroline Crale was tried and convicted of poisoning her husband, but just like the nursery rhyme, there were five other "little pigs" who could have done it: Philip Blake (the stockbroker), who went to market; Meredith Blake (the amateur herbalist), who stayed at home; Elsa Greer (the three-time divorcee), who had her roast beef; Cecilia Williams (the devoted governess), who had none; and Angela Warren (the disfigured sister), who cried all the way home. Sixteen years later, Caroline's daughter, Carla, is determined to prove her mother's innocence, and Poirot embarks upon an unprecedented challenge -- solving a crime without access to the crime scene.