Big disappointment for a little romance

A bomb explodes in the city. Attack? No need to search, the author comes to the police. Its demands are clear: to get his mother from prison where she is being held for the alleged murder of his girlfriend, if not be a bomb a day a week. Sure, it gives no indication on where they are hidden. And if the real culprit was not the one that is believed? Despite an interesting theme, I can not perceive the suspense, lost in multiple considerations policeman favorite of the author met in her so captivating trilogy. Pierre Lemaitre following me with happiness, including "Goodbye there" so different from his usual thrillers, I'm pretty disappointed. Printing a novel sketch written at the request, riding on the success of Goncourt. Too bad.