a sci fi movie about a castle that dissapears every night

Jason Mackenzie, a lightning powered vigilante, is called into action when an ancient Scottish creature, The Caillech, returns to our world and plans to destroy it in three days.

It would seem to be a night like any other as the projectionist powers down the cinema after the last screening - if it weren't for his increasing certainty that there is something lurking in a corner of the deserted cinema.