I don't recommend this book in the Playaway format if you plan on casually listening to the book. The chapters aren't broken down into a smaller number of tracks so one chapter is one track. Normally I don't find this to be an issue, but each chapter is broken down into several sub-chapters and told from the POV of different characters so it's pretty easy to get lost. Regardless of the format, the story isn't bad. It reminds me of a dark BBC drama - like Luther. I recommend the book.