Everyone has a secret, who can a queen trust? Upon Queen Elizabeth's order, Audrey Hayes travels to the borderlands of Scotland to learn where the fierce Laird Armstrong's loyalties lie. Is he aligned with his mother's English roots in support of the queen, or does he hold with the beliefs of his father, who wishes to see Mary of Scots on the English throne? The fate of Audrey's family rests on her success in finding the answer. After losing his lands in a wager and being betrayed by his kin, Gavin Armstrong entered a loveless marriage to obtain the funds to buy back his family home, Warring Tower. Now a widower, struggling against countless border wars, he is on the verge of losing his home and lands again. With few resources, he reluctantly makes another risky wager, one he cannot hope to win without trusting the secretive Audrey Hayes, a woman he suspects is an English spy. As the two work together to save Warring Tower, their attraction to one another grows. But when Audrey finally gains the information she seeks for Queen Elizabeth, she realizes that the only way she can save her family is to betray the man she loves.