Mystery Mansion (1984)

"Mystery Mansion" is a 1984 Adventure movie directed by Jack Duggan and starring by Dal McKennon, Barry Hostetler. Susan and her brother Johnny go to spend the summer with their aunt and uncle where they discover a map that may lead to some sort of treasure. Susan had been having nightmares about a girl (Rachel) who disappeared in a nearby mansion now old and abandoned. Eventually Susan and Johnny along with their cousin Billy begin a quest to find the treasure as well as the answers to Rachel's disappearance. While they are doing this 2 escaped convicts are also looking for the same treasure!