Shattering Nash (Reign of the Underground #4)
Amelia Shea

As second-in-command to the King of the Underground, Nash is a model confidante. Highly intelligent, trustworthy, and deadly, when necessary. Nash is the ultimate soldier in the Underground. His position with the organization spans decades and gives him discernment of their dangerous world very few perceive. Nothing stands between him and his unwavering loyalty to the Underground. Or so he thought.
An unlikely pairing no one saw coming, Charley and Nash couldn’t be any more different. The only thing they have in common is their undeniable chemistry and magnetism toward one another. Acting on their desire is sure to land both of them in positions fraught with risky consequences. Nash hiding his life from her and Charley holding her own secrets is a recipe for disaster. As the truth unravels, so does her life, putting everyone, including the Underground, in harm’s way.