Perry Mason: The Case of the Sinister Spirit.

Jordan White, a publisher friend of Perry, is called to a hotel where a guest, famous horror writer David Hall, has cleared out the hotel for a weekend and has called his "friends" - an actress, a fortune-teller, David's private assistant and the two remaining staff at the hotel to discuss business. They have come to the hotel as all of them are going to sue David over his new book - "The Resort" which characters are obviously based on Jordan and the guests. A practical joker, David plays tricks on them until he is thrown from the high tower of the hotel where Susan Warrenfield, the manager and owner of the hotel sees the fall and then Jordan at the tower causing the police to arrest Jordan. While Perry and Della try to solve the main mystery, Paul tries to find out who is trying to scare Susan away from the hotel. Could it really be a ghost or a more earthy visitor?