The story concerns an antiques dealer named Dillet who acquires a beautiful antique dolls' house for a relatively low price. The dolls' house comes complete with dolls which represent servants and a family made up of two children, a father, a mother and a grandfather. At one o'clock in the morning, Dillet sees a ghostly drama play out in the dolls' house. It shows how the mother and father murdered the grandfather by poisoning him and the consequences of that crime.