In the Haunted Mansion, a guest appears. His name is William, and he is looking for a meeting with the past—more precisely, with his deceased sister. He blames himself for her death and has dreamed for years of asking for forgiveness. But how can he do it, if all mediums are frauds, and the spirits they call are just tricks with lamps and bedsheets? However, the dead librarian of the old estate keeps his collection of horrors for a reason. Who, if not him, could dispel the skeptic’s doubts with his stories? Who, if not him, could guide William to the best medium and open a path to his sister who passed away many years ago. But will the skeptic survive the night?