Welcome to No.12 rue des AmantsA beautiful old apartment block, far from the glittering lights of the Eiffel Tower and the bustling banks of the Seine.Where nothing goes unseen, and everyone has a story to unlock.The watchful conciergeThe scorned loverThe prying journalistThe nave studentThe unwanted guestThere was a murder here last night.A mystery lies behind the door of apartment three.Who holds the key?