Jean Belin gives us his memoirs as a member of the French Sûreté, a law enforcement branch that dealt with major criminal activity. As a detective, Belin chased murderers, forgers, thieves, and those who plotted against the French Republic (anarchists, communists, foreign governments, and secret societies).
Belin offers details on several investigations in the years between the two world wars, and finishes with the difficulties brought on by the Nazis and the Vichy government, leading finally to his resignation. This is a fascinating look at the development of law enforcement and crime-fighting in France.