"Man in reverse" by Fred Vargas is probably one of the best if not the best Vargas. We find pleasure Adamsberg at work but it is far from its bases and the famous three apostles. Nevertheless, we find what makes the key Vargas: extremely well-described characters, the marked and marginal characters. A detective story as we like, clever and funny (even if the black humor and absurd side is slightly less present in this novel). A pearl!