Jeremiah Stilton #50: This hotel is haunted

Paper cover English language I was summoned my dear friend Hercules Buirat for investigation into the mysterious events that occurred in the famous Grand Hotel in New Mouse City. There was a ghost haunting the hotel and frightening the guests! It was wearing armor and carrying a ball and chain. I know that ghosts do not exist, but this was very scary. Will we be able to Hercules and I to solve this puzzle that causes a tingling in the spine?