The Girl With The Dragon Tattoo by Stieg Larsson
What an amazing book! I had a bit of a tough time getting into the book because it took me quite a while to see where everything fit together, but once it did, it was nearly impossible to put down! It's one of those rare books where I can't figure out what's happening until it actually happens. I could not solve this mystery, but once it was revealed, it was so obvious. But I like that. I'd rather have it be hard to figure out. I can't wait to read the other books!