Tightrope walker

Pierre Lemaitre is a tightrope walker.
His stories take in not much and yet they cling to not let you go.
The land seems agreed generally known, but léquilibre of his stories is their treatment, surprises cross roads and cynical tone of the writing of the author.
Over half the book, I really thought that this time the tightrope walker had tripped over the carpet (it's possible to get to do that ??).
The impression that the story did not leave the building and stood with black writing and its author jubilant.
But, of course, Lemaitre prepared his coup, with a second part that leaves the reader glued.
Ok, if I nitpick, it is less enjoyable than in the excellent "black frames" and "Alex" (but hey, you quickly get used to excellence).
A good thriller, which can safely be read independently of the foregoing, even if it is probably better to read "neat work" before.
The tightrope walker holding the rope.