After enjoying The First Fifteen Lives of Harry August I thought maybe all of Claire North's books would be amazing. Sadly, it was not so. 
 I hate to say it but I really didn't enjoy reading this book. The plot wasn't interesting enough and I felt the book was missing a sense of urgency when it came to hunting down Aquarius and Galileo. The plot is basically one of revenge when Kepler's host Josephine is shot and killed while Kepler jumps into another body to track down the killers. 
 The concept of the Ghosts is quite unique and fascinating. The way they jump and the fact that hosts cannot remember them at all is interesting. Some of the ghosts mentioned in the book had pretty interesting back stories. I enjoyed the parts with Janus and a few of Kepler's stories too. I just wish the overall revenge plot of the book was done better.