Relentless — Elizabeth Dyer

Ethan Somerton doesn't do safe or easy. He's all about the challenge. The risk. In order to rescue one of his agents, Ethan must infiltrate the ruthless Vega cartel. One tiny error -- just one -- and he's dead. Which means he needs Natalia Vega. Bright, beautiful, and cut sharper than the most lethal blade, she's finally reached her breaking point. Now Ethan must find a way to make her surrender.

Caught between desperate choices and no-win situations, Natalia has survived the unthinkable by becoming dangerous, relentless, and feared. When it comes to protecting her sister, there's no line Natalia won't cross. But when Ethan storms into her life with his cocksure arrogance, stone-cold competence, and seductive promises, Natalia wonders if she's finally found a way out. But discovering whether Ethan is salvation or destruction is going to require the one thing Natalia doesn't have -- trust.

As the cartel implodes and loved ones are threatened, Ethan and Natalia are going to have to choose between love, loyalty, and the lies they cling to. They could run, knowing they'll never be safe. They could fight, knowing they'll probably die. Or they can trust in each other…and do something far more dangerous.