This is a darker thriller than I usually read, but I loved the plot too much not to continue. Pipers POV really pulled me in, so much so that it was jarring to go back to the psychologists POV. Really great twists and turns and everything coming together in a way that made sense and felt earned. Nothing felt invented or retroactively added as far as hints from the start of the book, called together at the ending.

Also I had no clue it was #6 in a series, or in a series at all, but it does explain all the references to the earlier kidnapping of his wife and daughter that I assume was an earlier book