Bobby loves his dog King, a playful German shepherd…until the day King turns and attacks him, snarling and vicious. The dog is put to sleep, but Bobby still sees him everywhere—in the garden, on the stairs, crouching, waiting.

Then the horrific deaths begin—brutal, savage maulings. Terror grips the sleepy town of Fallsburg, and doors are nervously locked at night. For through the woods runs a dark shadow with dripping jaws, eluding pursuit with uncanny skill.

Now, more than ever, the scientist down the road must guard the deadly secret of the monster they’ve unleashed.