After a difficult few months, Baron Robert Franks has returned to London for the Season. Thrown immediately back into the work of The King’s League, he begins to pursue an elusive villain, who always seems to be one step ahead. When the trail leads him to one Lord Hamilton, Robert finds himself in the difficult situation of having to feign an interest in Lord Hamilton’s sister, Miss Hemmingway, so that he might investigate further. However, Miss Carolyn Hemmingway is much more intelligent and quick witted than he expects, leaving him struggling to keep all that he is doing a secret from her.
Carolyn is delighted with Lord Franks’ attention, only to realize that he might not be as attentive in her as she first thought. When she discovers his real intentions, she must decide whether to be loyal to her brother or to help Lord Franks with his investigation. Secrets, grudges and disaster swirl around them both, leaving Carolyn and Lord Franks clinging to each other for security as they face the foe, their two hearts twining together as they finally uncover the truth.