My Heart's Treasure — Marie Higgins

Ladies' man Anton Romero is smitten with Vivian Wentworth from the very beginning. He wants nothing more than to get to know the stiff Miss Wentworth -- and perhaps make her relax so she's not so uptight -- until he learns she's investigating him for a crime he didn't commit. Innocent and naïve, Pinkerton Agent Vivian is convinced that Anton is the outlaw her superiors have painted him. 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 desire.