Young Charles Elliot, future earl of Wiltshire, and Henry Thomas come from two very different circumstances. When an unforeseen event throws them together, they become inseparable. More than inseparable, they are nearly identical in appearance.

Now bachelors, the introverted Charles and his outgoing friend Henry discover that a loved one has been murdered. They switch identities in London society to better investigate, putting strict rules in place. The most important Do not form any romantic attachments while in disguise.

Charles is met with a dilemma when he is thrown into a peculiar circumstance with Lily Mason, a young lady who is restless in London society. Lily’s sister, Jane, has been working hard to claim what she feels is most a title in the form of marriage to Lord Frederick Fletcher.

When Henry tests everything Jane has worked so hard to achieve, she will have to choose to either hold fast to the security of her well-crafted plans, or be daring and try something new.