<p> Beautiful Caroline Crale was 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 divorcÉe), 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.</p> <p> Sixteen years later, Caroline?s daughter is determined to prove her mother?s innocence, and Poirot just can?t get that nursery rhyme out of his mind.</p>