The Demon and the Warlock — Richard Perry

In a the small, Pacific Northwest town of Pineridge, a Warlock, versed in the dark paths of ancient sorcery, leads his coven on a quest to free an ancient, cosmic evil from its eons long imprisonment. Two high-school students, a brother and sister, unaware of their destinies, are all that stand between the Warlock, his followers and their unholy task.