First appearance of the Commissioner Adamsberg, setting up the characters of the team that will gradually block around, zany, mistreated by life for some ... This is the beginning of a series that we will "captivated" gradually As to the opus. A priori there is no evidence that these blue circles are synonymous with violence but the 6th sense (unless it is the 7th) pushes our Commissioner to take an interest very closely ... and rightly so. .. Meanwhile a renowned oceanographer contacts him, presumably to tell him about this circle man unless it have another reason ... In short, everything fits together to progressively and I admit that this side "weird" characters brings a touch of humor that without it would give these novels too sombre.Le appearance only "small" catch is the end can be a little too farfetched, irréaliste.Mais we forgive him .... it's going to the limit with the crooked side of the story ..... It would not of what Vargas !!! !