After the devastating 2019 fire at Notre Dame, two mysterious sarcophaguses were discovered under the cathedral's stone floor. Who is buried in them, and what secrets will these coffins reveal? Follow a team of archaeologists and historians as they attempt to solve centuries-old mysteries using the latest scientific investigation techniques. Narrator: Mercer Boffey. Author: Florence Tran, Christine Le Goff. Director: Florence Tran. Producers: Christine Le Goff, Marion Papillon.