A US Marshall and his trusty K9 partner are out to stop a serial killer terrorizing truck stops across the country in this suspenseful crime thriller. K9 specialist JW North is an expert at sniffing out criminals. Now, as a U.S. Marshall and member of the Serial Criminal Task Force, he's about to face his most dangerous and disturbing case yet. Together with his "big dog" Ares and his new partner Ben Kellum, North is on the trail of the Truck Stop Killer, a vicious serial killer who has left a swath of murdered prostitutes across the United States. The investigation leads them to a bolted gate in front of an old trailer twenty miles north of Prescott, Arizona. They cut the lock; the gate swings open with a loud groan, warning the killer inside. Unsure of what they are about to face, the team can only hope they have arrived in time to save the killer's latest victim.