A boy detective takes on the most brilliant thief in Europe In a country manor, a terrible noise awakes the household. Downstairs, the estate's secretary has been murdered. There are signs of a break-in, but everything appears to be in its proper place. What kind of thief would commit murder to steal nothing? The first detective on the case is Isidore Beautrelet, a precocious teenager who wears a fake beard to disguise the fact that he has not yet graduated from high school. Although the other