In the neon-drenched alleys of Budapest, Will Slater comes face to face with his past. Jason King is back–and he brings devastating news. When Slater agrees to help King get revenge, they quickly find themselves in a fight they know very little about. Because the world is changing and technology is rapidly advancing, spiralling toward a total transformation of society. There is a new breed of terrorist–the next step in human evolution. As the truth unravels, the terror amplifies. And by the time it's over, they both find out that there is a fate far, far worse than death.

Half a year ago in Macau, Will Slater waged war to rescue nine-year-old Shien from the clutches of a hellish industry. He left her with an old government colleague, who promised to find her a foster home and give her some semblance of a normal upbringing. Slater moved on... Now, deep in cartel-infested Colombia, he hears dark whispers of something called the Lynx program–a clandestine division that raises young girls and forges them into sociopathic killers. A division founded by the very same man Slater left Shien with.

Outside the gigantic Mountain Lion Casino & Resorts, Will Slater–fresh off a brutal career as a government assassin–watches a young child get snatched off the street by an army of security. Acting out of instinct, he hurls himself into the fray, rescuing the girl and preventing her from a fate worse than death. Shien carries sensitive information capable of bringing down Peter Forrest, the billionaire owner of Mountain Lion. When Slater opts to protect her and pursue the truth, he unravels a horrifying discovery that will unlock his deepest, darkest rage.

Aboard a luxury passenger train in the desolate Russian Far East, Slater heads for the port city of Vladivostok with a mysterious grudge. After traumatic past events, he was reluctant to return to the region, but he’s got unfinished business to attend to. Terrified passengers, secret police, and shadowy underworld figures are just the beginning. Arriving in Vladivostok, he finds something wretched–something dark, twisted and shocking.

Ex-US black ops warrior Will Slater wasn’t looking for peace. He anticipated carnage when he decided to venture into war-torn Yemen–but he didn’t expect to have to call on his skill set so soon. A young Yemeni boy is dead–maimed by northern highland tribesmen in the Hadhramaut Valley. The act was intended to send a message to the remote mountain town of Qasam, ordering them not to interfere with the business of the tribes. Slater sets off into the mountains in pursuit of vengeance. It was supposed to be a simple act of vigilante justice, but the boy was just the tip of the iceberg.