The Bagneux Archives contain hidden treasures, rare documents of inestimable value. The archivist of Bagneux had found one in the collections of the City but he disappeared without leaving a trace… To help him find him, you will have to solve puzzles, make games, answer questions, with the help of his assistant. Sunday, the survey will take place at Clos des Sources: the future Maison du Patrimoine also conceals mysteries...