Nemesis

When Miss Marple receives a letter from the recently deceased millionaire Jason Rafiel, she's not sure what to make of it. Knowing her deductive skills, he challenges her to solve a crime. If she does so, she will inherit £20,000. The only problem is that he has failed to mention who was involved, or where, and when the crime was committed. Jane Marple is intrigued. Never underestimate Miss Marple