Directed by John Carl Buechler and starring Mark Hamill, the film is loosely based on the 1987 novel Watchers by Dean Koontz.

Ever since he lost his wife and son in a devastating fire, Detective Jack Murphy (Mark Hamill) has wandered around life in a fog.

Killed in a manner too brutal to be human, too clever to be animal, the only clues to Gus's death are a vagabond golden retriever and Dr. Grace Hudson (Lisa Wilcox), the beautiful scientist who seeks him out.

Dr. Hudson tells Jack that Einstein, the dog, is actually one half of a super-secret government experiment.

The film is notable in that Jason Voorhees actor Kane Hodder, who had previously worked with Buechler on Friday the 13th Part VII: The New Blood, has a minor role sans make-up.