Violence has been Lochlann O'Connor's companion since he was born into a family of old-school Irish terrorists. From there he is recruited into Alpha, a secret government agency dedicated to fighting terrorism—with extreme prejudice. Lochlann's bravery, efficiency, ruthlessness, and the natural dead eye that lets him hit anything that moves, quickly make him one of the shadowy organization's most valued operatives.

Cas Vega joins Alpha because it's marginally better than a prison sentence. He's a former drug cartel assassin—or at least that's his story. But Lochlann is suspicious. Despite an irrational and overwhelming attraction to Cas, Lochlann has questions, and they soon lead to a deeper and deadlier mystery. What is Alpha's true purpose, and why does it seem they want to eliminate Lochlann?

Lochlann and Cas must work together to get to the bottom of Alpha's scheme and escape it—and all while Cas keeps secrets that could cost him his life if they're revealed. But it's not an alliance that can last. Duty turns the men into enemies, even while fate compels them into each other's arms. Before they can contemplate which will prevail, they must figure out how to survive.