It Lives in the Screen

This is the story of an isolated Alaskan town that is plunged into darkness for a month each year when the sun sinks below the horizon. As the last rays of light fade, the town is attacked by a bloodthirsty gang of vampires bent on an uninterrupted orgy of destruction. Only the small town's husband-and-wife Sheriff team stand between the survivors and certain destruction.

An ominous help note finds its way to a 1980s post office, connecting a dead letter investigator to a kidnapped keyboard technician.