DAngerous Liaisons Book 2: BOUND TO HONOR 

Rafe Martinez, code named Diablo, is on a mission to infiltrate Silas Carver's backwoods survivalist group, Proclaim. Cynthia Cooper, rookie agent recently fired from Delta Star, blunders into the survivalist's camp in the Smokey Mountains. Captured, she knows she's close to death as his leering men encircle her. Then she spots legendary agent, Diablo, among the pack and hopes that, even though he won't recognize her, he won't let her die to keep his cover intact. Her pleading gaze locks with his and he bites back a curse. Diablo fights his way through the mob to save the innocent blue-eyed blond and claim her as his woman, drawing Silas's suspicious amusement. It's the only way to save her pretty neck and keep his cover from being blown. He puts the fact that she isn't screaming her head off, as he carries her to his cave, down to shock. Cyn can't believe her luck. It might be a perfect chance to get back in the director's good graces by secretly helping Rafe. Alone with him in his cave, she suddenly feels vulnerable, the sexual awareness between them hot. Diablo finds himself falling for the woman he'd only claimed to save. Still, he can't chance letting her see his true colors. Besides, he can tell that she's keeping secrets. Through clouds of suspicion, a mercenary bonding ritual, and enforced intimacy, Cyn surrenders to her need for Diablo, even as she looks for clues to turn over to the agency.