Murder in retrospect : a Hercule Poirot mystery
(Book)

The crime in this book is the murder of the brilliant painter Amyas Crayle. His wife is convicted of the crime and sent to prison. However, their daughter is now of age and receives a letter from her mother professing her innocence. The daughter turns to Hercule Poirot for help. If the wife is innocent, Poirot must look at the five people who were present at the time of the crime---hence, the five little pigs. And in true nursery rhyme fashion one little pig went to market (finanacial counsellor), one little pig stayed home (thanks to an inheritance), one little pig had roast beef (had made a good marriage), one little pig had none (retired teacher with limited income), and one little pig cried all the way home (the woman with a disfiguring facial scar).