It's possible that this is an adaptation of one of the many "haunted house" games in other BASICs. At this point the author is presumed to be Scott Le Brun. It may possibly be related to the design here. It looks likely that the game was based on, or at least heavily inspired, by the Usborne type-in, Haunted House.
Sold at least as early as 1985 or 1986 through Scott Le Brun's VZDU and also other VZ user group publishers such as VsoftwareZ; as it's mentioned in LE VZ200/300 OOP issue 10 from February 1986.
[+] Users who have solved this game
[+] Users currently playing this game