Disjointed and difficult

Both say: I got fooled by the cover deliciously "black" ...
For the content, it is very modern (that is to say 25% of sex, violence 50% and 25% of perversion).
Here.
The intrigue is disjointed, as the narration and sinks without much interest in power relations between absolutely no sympathetic characters over a story which is not believed and everything always seems overrated in a whipsaw : more black, more and more violent, ever more twisted, etc.
Frankly boring ...