Murder Without Pity- Steve Haberman!!

Paris, France: dark with fog, riots over police killings, and Far Right demagogues.
Such is the milieu surrounding dogged state criminal investigator Stanislas Cassel. However, this grandson of a French propagandist for Nazis during their WWII Occupation, ashamed of his family's history, avoids anything political. Instead he buries himself solving small crimes, which he calls his Little Miseries.
One current dossier involves a pensioner's bizarre murder. During his pursuit for the killer/s, Cassel meets a beautiful Jewish woman, whose family the Germans killed. Haunted by this, she tries to warn him about the Far Right's reemergence, but to no avail.
Only when tragedy strikes does he awake to his blindness and understand a painful truth: a larger evil beyond his Little Miseries, as the Occupation portened, lurks.