Adamsberg continues to go against the expectations of his colleagues as he turns his focus on someone that no one else suspects. There is a slight sense of the odd about the chase he has for his ex-girlfriend but putting thart to one side the rest of the story stacks up well.
As the net closes on the killer the complicated reasoning for the circles and the victims is put together well. Because of Paris there is a feeling of the Maigret about this and Adamsberg is equally a loner, lacking a wife back home, when he is at work.
In terms of the best thriller test, which is would you read the next one in the series, then the answer has to be yes.
A review will follow soon...