This unusual book is pretty well outside my normal wheelhouse, and definitely required me to focus intently on what I was reading to make sure I was catching all the details. At a touch over 500 pages, it's an investment, but this quirky mystery story is worthy of the reading time. I found that it was really intriguing at the beginning as Aiden is learning what has happened to him and what he has been tasked with. The process of solving this mystery, and how he gathers clues through his various "hosts" using their particular knowledge, skills, and strengths (and in some cases, lack thereof) makes for quite an original story. There were parts through the middle that lagged a bit (some of the hosts were more interesting than others), but the ending, when the details of what's been happening to Aiden, as well as the murder mystery he's been working to solve, is revealed, really picks up.