It's not the only one, but it's up there!
Talk about beating around the bush, this is it. I never finished this book, but I tried… Oh how I tried.
This whodunit moved waaaaay too slowly; the book grabbed my attention but was unable to maintain a firm grip. The reader was expected to wade through the history of the world (480 pages!) to get to the obvious point. Whew! Tiring indeed.