Crime à Biot

Marie Lemaire is poisoned during a dinner that brings together an association of merchants She is the heiress of her recently deceased husband François who was the owner of the largest glass factory in the city All the guests are potential suspects and the investigators must sort out the real from the fake detect motives and verify alibis Olivia Rousseau one of the guests exmistress of François Lemaire who left her to marry Marie is dead at her home In a letter she declared that she had poisoned Marie and killed herself in the same way