Deep undercover with a Tijuana drug cartel, FBI agent Sophia Diaz is two days away from making the biggest bust of her career. But when a rival cartel puts out a hit on her, there's only one man who can keep her safe.Immigration enforcement officer, Nelson Cruz, has his hands full with his own operation while undercover as a member of the Savages motorcycle gang. When orders come down that he has to protect the sexy, but oh-so-aloof, Agent Diaz without breaking his cover, Nelson must put his skills to the ultimate test. Especially since a previous relationship with Sophie already compromised his career and wreaked havoc on his heart. Nelson's never gotten over the time he spent in Sophie's bed or the fact she double-crossed him on their last mission together. He can't trust her...and she doesn't trust anybody. As the two fight their red-hot, south of the border attraction, Nelson discovers a secret that could destroy Sophie's career forever. Once again, he's forced to put his job--and his life--on the line for her. Can he keep her alive and out of prison? Or will their careers, as well as their hearts, go up in the flames of desire?