I read this book a couple weeks ago and can’t even remember whodunnit. I keep trying to find that awesome mystery/thriller that will win me over, and they never do. Everything seems so incredibly unlikely in this story of people forming super close attachments after hearing a scream whilst a murder is committed in a library. There was a cool epistolary element, but I don’t think it was utilized to its full potential. If you are a mystery fan, YMMV!