The tone of the novel is decidedly modern, the language is very raw (it even becomes boring in the long run). The use of the second person throughout the narrative (as if Joe was talking constantly Beck) is probably supposed to demonstrate the extent of his obsession, but it's quite annoying over time. One must often undergo many insipid conversations that contribute nothing to the plot. The author does not lose an opportunity to highlight the perversity of Joe, even make a ton. Besides, in the end, I'm tied me to any of the characters of the novel and remained completely indifferent to their fate. Many also improbabilities: eg Joe takes no precautions and prints his DNA on everything behind, but he never worried (?). And too many references of which have not talked to me.
Still, the suspense is relatively well maintained and that the book will delight those who do not like the moral triumph in the end.
But overall, this book did not like, too much for my taste imperfections.