On June 8, 1924, in the Bois de Boulogne in Paris, we found the decomposing corpse of Louis Boulay, an office boy. Very quickly it appeared that the man was involved in the horse racing industry where he acted as an intermediary for the bookmakers.

Christophe Hondelatte, Doctor of Sciences specializing in Organic Chemistry. Member of the National Scientific Police Service at the Lille laboratory. Guest(s): Philippe Marion, Doctor(s) specializing in organic chemistry.