Sarah Lynn Jones fires her process engineer, who becomes almost violent at his termination but maintains a perfect alibi as she begins to receive threatening messages.
When someone tries to kill her dog in the normally peaceful mountain community, Sarah Lynn grows more desperate. Her best friend's husband works with the local police force to track down the culprit while Sarah Lynn stays away from home for safety.
Ben Striker, the new quality control manager where she works, offers to watch her house at night in exchange for overnight lodging until he can buy a place in the area. Protective sales manager Mark Slack is not happy about this, figuring he should have that job since he's been pursuing Sarah Lynn romantically for some time.