Submitted by Curt Wiederhoeft
Ben (Martin Milner) killed Uncle Zorba, and had hoped to have plenty of time to search the house for the hidden treasure. Buck (Charles Herbert) actually finds it, and when Ben tries to kill him, the ghosts band together to eliminate Ben. Ben becomes the 13th ghost, and Mrs. Zacharides (Margaret Hamilton) announces that the haunting has ended.
Looking for the 2001 remake? The producers decided to spell the title differently. Click here for the pooper.