Enquête game : Le Trésor Caché de Sainte-Maure-de-Touraine

In the course of your previous investigations, you've discovered a letter erased by time and an empty box... You're convinced that this pretty town has a treasure, but you haven't been able to find out who hid it or where it is. Set off on an investigation through the town's streets, armed with your briefcase. Can you unravel the mystery?