The first half, this was a five star book, and the second half this was a three star book, so I'll split the difference. While George/Jake was in Derry, the book was at it's best - George had a goal and he followed through with it, while at the same time managing to meet interesting characters and say some things about time travel. When George got to Jodie, TX, it got a bit slow. I didn't find his relationship with Sadie particularly moving, and I wish he'd of explained more what the harmonies were - the "I caused the harmonies" at the end didn't really do it for me - instead of just telling us over and over that they existed. It could have done with a bit more editing, I think. The ending was sad, but well done, though I think a better and shorter 2011 novel about how time is a whore is A Long Long Sleep by Anna Sheehan. If you really want to bawl at the end of the book because time is not fair, read this one.