Best way to describe this would be a sort of body-swapping psycho-thriller. There is a blurb that says it's like a cross between J. G. Ballard and Thomas Harris. Hmm....Yes, and no. Reminded me a little of Ballard's later novels, when he moved away from sci-fi and the post-apocalyptic genre. As for Harris, well, there isn't any cooking and serving of human organs here, and there are no killings involving the removal of women's skin. So you can forget the likes of Hannibal Lecter and Buffalo Bill. They make this killer look soft in comparison. There is no doubt though that this novel does feature a dangerous maniac.
Parisian therapist Marc Lacroix secretly develops a scientific machine that will allow him to transfer a little bit of his psyche into a patient, and a little bit of the patient's into him. There is a particular patient right at the front of the queue; a patient he knows all too well: the psychopathic slasher Michel Zyto. The plan is he can get to better understand the frontal lobes of his most high-risk patient, whilst also giving a little bit of his own mind to try and help ease the impulses to kill, and thus, hopefully, lead to them on the path to recovery and not becoming a danger anymore. After a trial experiment on a couple of dogs, Lacroix & Zyto undergo the procedure. Only something goes wrong, with Lacroix ending up in the body of Zyto, and Zyto in the body of Lacroix.
What follows is a game of wits where Zyto, in Marc's body, heads to Marc's home to taste the good life of husband and father, to wife Marie and young son Leonard, without arousing suspicion - the scene involving Zyto losing his virginity with Marc's wife was excruciating!, whilst Marc, drugged and returned to the secure hospital in Zyto's body, must try to figure out a way to escape and save his family from peril and probable death.
What sounds like being pretty chilling, dark and scary stuff was actually not really the case in terms of the overall tone of the book. Well, until we get to the finale anyway. There are only two murder scenes - the one towards the end being gratuitously bloody and pornograpic like something from a video nasty of the early 1980s, and while there isn't anything going on in the way of laughs, there were a few scenes involving Marc's son Leonard that I did find quite funny. Speaking of Leonard, he would actually go on to play a pivotal role in Zyto's cunning plan: to execute the perfect murder/suicide and transfer himself into Leonard's body, after figuring out that he can use the machine time and time again to enter the bodies of the young: thus becoming immortal.
If I'm being picky, the novel could have done with being trimmed down a bit, as I did find it too long, but for the most part, I really enjoyed it. Belletto left much to think about in regards to the themes he was exploring.