Covert agent Zachary Griffin and FBI Special Agent Sydney Fitzpatrick are sidetracked from an ongoing investigation to follow up on a potential lead. In a small Arizona border town, gunrunning and drug trafficking into Mexico are a part of the landscape—but not when they're orchestrated by an officer in uniform. At least that's the story told to agents Griffin and Fitzpatrick.

But the dirty cop is now missing, and his sister says he's innocent, a victim of a corrupt police department. She is convinced they set him up to take the fall, then killed him, and she can prove it—with help from a highly unusual witness. Suddenly an open-and-shut case seems anything but, and the clock is ticking as Griffin and Fitzpatrick take on an entire police department in a deadly match that could go up in smoke at the last second.