This book is not a follow on to the first book, Twisted, but I found myself comparing them both all the time I was reading it. They are different in that this new book seems to be more in-depth in the story work. It was an absolutely excellent read and I found it hard to put down once I started.The stories are very well thought out and I still couldn't work out what the twist was going to be until it appeared right in front of me.Another triumph by Jeffrey Deaver - well worth reading.