Sher Mountain Killings Mystery is a 1990 Australian film directed by Vince Martin and Phillip Avalon. This film is categorized as an "Ozploitation" horror film. The synopsis for this film is “Nobody trusted that the Gem has mysterious power. From thieves’ perspectives, it was just another jewel. But not everything is as it appears ("Sher Mountain Killings Mystery (1990) - IMDb", 2003).’ The film differentiate itself from other horror film with the concepts such as Old Ranger’s castle, cursed stone and Mysterious power which adds more Australianness tone to the film.

Denis Whitburn wrote the script who was gaining notice at the time with his work on Blood Oath. According to the Beyond press kit, producer Phillip Avalon devised the story and the basic script before bringing in Whitburn to improve it ("Denis Whitburn - The Screen Guide - Screen Australia", n.d.).

Unique feature of the film is that the cast includes British professional boxer Joe Bugner, who gained the nickname "Aussie Joe" after moving to Australia to stay and make a late return to the ring.