After Bonney Police detective J.D. Wilder wraps up three cold-case murders, believing that the murderer was his former partner, he tries to focus on his personal life in his new hometown and his budding relationship with Corrie Black, owner of the Black Horse Campground.

When he receives information that proves his former partner wasn't the murderer, the case is reopened with the knowledge and urgency that the killer is poised to strike again. But who held a grudge against the three cold-case victims... and who is that person's next target? With the help of Bonney County...