The seventh and never-before-published book in USA Today best-selling author Nicholas Sansbury Smith's propulsive postapocalyptic series about a soldier's mission to save the world.

The government said the Variants were dying off.... That the beasts would be extinct in a matter of years.... That the Allied States had returned to prosperity and freedom.... The government was dead wrong. Deep under the cities, the Variants weren't just hiding, they were breeding. While the human survivors of the Extinction Cycle built outposts and brought back industries, the monsters were building something of their own.

Eight years ago, an engineered virus ravaged the globe, infecting and transforming humans into apex predators called Variants. Now, almost a decade after the end of the war, civilization has slowly clawed toward recovery. But evil and intelligent forces dwell in the shadows with the starving beasts, scheming to restart the extinction cycle and end humanity forever. And once again, Beckham, Fitz, and Kate will rise to fight them, joining forces with new heroes to try and save what’s left of the world.

The worst of nature and the worst of science will bring the human race to the brink of extinction. Master Sergeant Reed Beckham has led his Delta Force team, code named Ghost, through every kind of hell imaginable and never lost a man. When a top secret medical corps research facility goes dark, Team Ghost is called in to face their deadliest enemy yet - a variant strain of Ebola that turns men into monsters.

Central Command is gone, the military is fractured, and the surviving members of Team Ghost, led by Master Sergeant Reed Beckham, have been pushed to the breaking point. While the strong return to the battlefield, the wounded are forced to stay behind on Plum Island and fight their inner demons. Betrayed by the country they swore to defend and surrounded by enemies on all sides, Team Ghost has one mission left: protect Dr. Kate Lovato and Dr. Pat Ellis while they develop a weapon to defeat the Variants once and for all.