The deadliest enemies are the ones we cannot see.

When Army Ranger Garrett Knox left behind his military career to lead wilderness expeditions, he thought he’d escaped the life-threatening missions forever. But his quiet world in the Montana mountains explodes one evening, forcing him to accept a persistent government agent’s dangerous mission: Hunt down Knox’s former military buddy accused of treason and the murder of nearly their entire platoon.

Knox’s globe-spanning pursuit of answers soon places him in the crosshairs of a covert operation testing bioweapons on innocent civilians. As the body count rises, Knox assembles his own skilled team to expose the truth and topple the corrupt power-players behind the deadly conspiracy.

Racing from the halls of Washington D.C. to the unforgiving jungles of the Amazon and the hinterlands of Africa, Knox and his team find themselves in a do-or-die race to gather evidence and stop the devious masterminds before their sinister plans can infect the entire nation.

With adrenaline-charged action, stunning betrayals, and a final confrontation that will leave Knox and his country changed forever, this gritty thriller by bestseller RJ Patterson (Titus Black series) will keep you breathless until the last shocking secret is revealed.

This action thriller is perfect for fans of Tom Clancy’s Jack Ryan, Vince Flynn’s Mitch Rapp, Robert Ludlum’s Jason Bourne, or Stephen Hunter’s Bob Lee Swagger!