Unlawful Men Series by Jodi Ellen Malpas

Genre: Romance; Romantic Suspense 

The Brit (Unlawful Men #1) - Blurb  

Pleasure has never been so deadly.

Rose Cassidy doesn't truly live; she just exists. Numbing herself to fear and pain is the only way she can survive in this cruel world. So when she's taken as collateral by the notorious Danny Black in a deadly game of power, she's thrown by the deep fear she feels rising within her. And, worse than fear, a profound desire. She's heard tales of The Brit. He's callous. Coldblooded. But no one ever said he was wickedly beautiful and darkly captivating. He sees past her mask, giving her a cruel sense of hope. But she must fight their twisted attraction or risk losing the one thing she survives for.

When Danny Black took an enemy's beautiful lover as security, he never anticipated the repercussions. Or the warped attraction they would share. Rose Cassidy pushes Danny to the brink of madness with her impenetrable façade and savage allure. He has to remind himself that she's bait. A solution to a problem. Yet she evokes powerful feelings in Danny, and feelings are risky when you're wanted dead by endless enemies. 

The most dangerous game is about to be played. 

But can either of them win?