Knave vs Spy (Highland Knaves #3)
Michelle Marcos

At twenty-five, Camran Slayter is set to become captain of a Royal Navy ship. The scars on his body offer a tour of his hard life, but the sea allows him to escape his troubled past. When he rescues the tantalizing woman from drowning, he never suspected it would put his entire naval career in peril. The American agent proves more trouble than she is worth…until he starts to fall for her. That’s when it becomes really dangerous.
Priscilla is involved in a deadly chess game, one which makes her a traitor on two continents. But when she is captured and interrogated by the ruggedly handsome Scotsman, and he strips her of her secrets one by one, she realizes that the most dangerous threat of all is yet to come…