Another book about the multiverse theory...although this one is considerably darker than Maybe In Another Life. It is about a man who is forced to switch places with another version of himself from an alternate universe and the journey to find his way back home. I really enjoyed comparing the two different takes on the multiverse theory in such close succession, although it was a complete accident. I did feel like there were some loose ends left untied that made the book seem a little incomplete and times where the science of it all made my brain spin. But overall a good read...plus it takes place in Chicago, so bonus points for that!