Ladies' man Anton Romero is smitten with Vivian Wentworth from the very beginning. Her beauty captures his interest, but knowing that she's lying to him makes him want to know why she acts so charming. But when he learns that she thinks he's a spy, he knows he can't hold his secrets any longer. Innocent and somewhat naïve, Vivian wants to prove to her boss that she deserves a promotion from working in the office to actually becoming a field agent. She's determined to catch a spy-even if he's charming and extremely handsome. She's convinced that Anton is her man, but now she has to catch him in the act. But her over-zealous determination puts both of them in danger and he is forced to play the honorable rogue. Sweeping her away to Padre Island off the coast of Spain seemed like a clever idea at the time. But how can he protect them both from his uncle's murderous games when Anton's heart falls victim to a woman as full of independence as she is desirable?