The Brading Collection - Patricia Wentworth

Lewis Brading loves only one thing - his collection of jewels. Not only are the gems extremely valuable but also every piece has a fascinating and bloody history attached to it. However Lewis is a frightened and difficult man who sees thieves around every corner. When he asks Miss Silver for help, she gives him some sound advice and turns him away. A few days later, she receives a letter from him, again asking for help. But it is too late. In the morning paper is the news of his murder.