I probably give it a 3.5 The story is very readable and I had a hard time putting it down. My criticism is that I figured it out the twist fairly quickly. Also, (begin rant) I felt like the main character (and author?) had a very condescending attitude about southerners . It really irritated me several times during the book and it seems like "Yankee superiority" is the last acceptable prejudice in America. End rant.