During a visit to the Centre d’archives de la Grande Zone argileuse (CAGZA), you mysteriously find yourself locked up in the vault where invaluable archival records from the Town of Hearst are preciously stored and usually well guarded. To find the combination that will allow you to escape, you must first explore the fonds, collections and documents in order to solve various puzzles. Thankfully, you love history and feel up to the challenge! Unfortunately, you only have 60 minutes before the lights go out! Will you manage to escape before total darkness?