When a terrorist is on the loose, the Tactical Crime Division is on the case. To find out who poisoned medications, two of TCD's agents are tapped to go undercover posing as a married couple and infiltrate the company. But as soon as Jace Cantrell and Laura Smith arrive at Stroud Pharmaceuticals, someone ups the ante by planting explosives in their midst. Turns out that the small-town family business is hiding a million secrets. Could they unknowingly be protecting a vengeful killer?