....and it took forever. Book #37 was An Instance of the Fingerpost by Iain Pears.
It's not that it's not an interesting book, it's just that it is so densely packed with info, characters, history and biases that you have to keep thinking "Now, M was who?"
The story takes place in 1663 in England. A teacher (and a pretty unloveable guy) at Oxford is murdered. Who is guilty? The story is told as four manuscripts written by four different people involved in the story in different ways. Each of them fingers a different person as the murderer, and posits a different reason why.
And in that sense it is a fascinating book--seeing how the assumptions each of the "authors" colored how they interpreted actions that each of them saw. And it is a chilling look at doing "what must be done" to "keep the peace" regardless of what it costs in innocent human lives.
That said, though, I wouldn't say that this was a book that I particularly enjoyed. I could see the author's skill, which I thought was pretty awesome, but the book itself left me cold. Great technically, just not a rewarding enough read.
By the way, that's not the take of most of the reviewers on Amazon.com. Most of them were far more positive about the book than I. If you've heard about it, you might want to read something more than my lukewarm response.