Riders of Light - Haunted Tales from Jorvik

One day, Alex, Linda, Lisa and Anne receive a strange letter inviting them to a mysterious place. When they all meet there, much to their surprise, they can't make head nor tail of it. Why did someone write to them and bring them here of all places? To pass the time, they begin to tell each other spooky stories full of mystery and supernatural phenomena. But with each story, the atmosphere thickens and the questions multiply. Who is the mysterious letter writer? And what is the real reason for their meeting?