Hardly a day goes by without a new list being published! Here's an interesting literary one: 50 Famous Books That Were Posthumously Published. Of course, the arguable key word here is "famous", and there are clearly some obvious omissions (especially from a mystery perspective), but we were pleased to discover we had heard of, if not exactly read, nearly all the books on the list.
There's a popular fiction section on the list, and most of these are thrillers or suspense novels. Select a few to present to your book club as mystery trivia!