Last week I finished probably the fifth mystery I have ever read in my life. Maybe sixth if you count those robot SF mysteries that Isaac Asimov wrote. I remember the one I read was about a murder that took place on a planet where the human society that developed there loathed contact with other humans. If they didn't see each other in person how could someone be murdered? I guess that would be a...mystery.
The novel I finished last week was The Murder of Roger Ackroyd by Agatha Christie. It was the second Agatha Christie book I have read. Seeing as how it's a mystery I cant' say too much about it but I will say that I first decided to read the book because of the introduction written by Connie Willis for her new book of short fiction. Willis names this books specifically as one of her favorites and goes on to say that she learned almost everything she knows about plotting a novel from "Dame Agatha." Unfortunately the introduction also gives away the identity of the murderer. I read it anyway. I had never read mystery that I had known who was going to be the murderer before going in.
I will say this for Agatha Christie, each of her books that I have read I have torn through. I guess in any good mystery you get to the point where sleep and hygiene become less important than getting to the end and discovering who is the murderer. I don't see myself ever becoming an avid reader of mysteries but an Agatha Christie mystery every year or so might be a nice break from routine.