From the front cover:
"What is the Secret of the House on Hangman's Hill? Only the Dead know, and They aren't Talking. This 32-page book contains maps, tables and guildelines for use with AD&D in this Haunted House Adventure. BOO!"
The Arduin Adventure, Moon Base Clavius, Wild West (FGU) [not in DB]; Suppliements: Adventure 07: Broadsword,