I've heard a lot about the Greywalker series over the years, with many people singing its praises. Since I usually like urban fantasy, I decided to give it a go. 
 There was something about this book, however, that just didn't work for me, and it's hard to put my finger on exactly what it was. The first half of the book, despite starting with a bang, is on the slow side. The way Harper Blaine's new powers as a greywalker were exposed to us was an interesting one, and it was fun to see things from a scientific perspective. But Harper was in denial about what was happening to her for too long. Eventually, her insistence on pretending nothing had changed was frustrating rather than believable, 
 The second half had more action, and it was better. Things just seemed to get rolling and the book came into its own. However, this didn't make up for the slow start, and it was still hard for me to get on the same page as Harper. 
 There was also something about the author's style that wasn't working for me. At times it became very convoluted. Having given birth less than a week earlier, I was still completely knackered and I'd find myself struggling to actually follow things properly. This, however, is a personal complaint linked to very specific circumstances at the time.