I really hooked on this book ... until the last quarter of the book, where "it leaves peanut". In these last pages, there are too many improbabilities, revelations that fall like hair on the soup, paranormal characters who land I do not know where (that is worthy of a bad soap opera) ... I will say no more respect for the people who will engage in reading this book, which manages to captivate us, before sinking into the improbability.
The key to the puzzle is nevertheless interesting and could have been exploited more intelligently in the book. But in the last pages, one wonders if the author has not sought to deliberately botch his novel!
Really disappointed by this book that promised so much!