Yes, the book had some intriguing (albeit deeply flawed) world building. It also had logical consistencies so profound they insult not only insult the reader, they actually could cause neuron death. 
 The entire premise of this book is that (view spoiler)[reapers and psychopomps (hide spoiler)] want to cause the (view spoiler)[death (hide spoiler)] of a young woman who is (view spoiler)[fated to cure disease (hide spoiler)] in a post-apocalyptic global warming scenario where Boston is the new Venice. Instead of allowing said young woman to (view spoiler)[succeed, creating more human beings than ever--every single one of which will eventually die-- (hide spoiler)], they prefer to (view spoiler)[try to murder her, creating a much reduced population, and fewer souls to reap over their greatly extended life spans (hide spoiler)]. Plus the whole (view spoiler)[whole organ theft (hide spoiler)] subplot was ridiculous. 
 At the same time, the two supposed heroes of this book spend their entire time indulging in what I can only refer to as chick lit porn sequences. From the unfortunate nipple incident at the start of the book to many more encounters as the "book" progresses, one suspects the "plot" is a mere carrier to enable these events. 
 I can't understand why it has been so highly reviewed although I wish all the other readers who do enjoy this kind of book well. At the same time I'm glad I got the book for free with the Prime early access thing on Amazon rather than wasting my money.