Now that the war with France has ended, Baron Guy Fortescue arrives in England to claim his inheritance, abandoned over thirty years ago when his father fled to France after killing a man in a duel. When Guy is set upon by footpads in London, a stranger, Lord Strathairn, rescues and befriends him. But while travelling to his country estate, Guy is again attacked. He escapes only to knock himself out on a tree branch.
Aspiring poet Horatia Cavendish has taken to riding her father's stallion, "The General", around the countryside of Digswell dressed as a groom. She has become bored of her country life and longs to escape to London to pursue her desire to become part of the London literary set. When she discovers Guy lying unconscious on the road, the two are forced to take shelter for the night in a hunting lodge. After Guy discovers her ruse, a friendship develops between them.
Guy suspects his relative, Eustace Fennimore is behind the attacks on his life. He has been ensconced in Rosecroft Hall during the family's exile and will become the heir should Guy die. Horatia refuses to believe her godfather, Eustace, is responsible. But when Guy proposes a faux betrothal to give him more time to discover the truth, she agrees. Secure in the knowledge that his daughter will finally wed, Horatia's father allows her to visit her blue-stocking aunt in London. But Horatia's time spent in London proves to be anything but a literary feast, for a dangerous foe plots Guy's demise. She is determined to keep alive her handsome fiance, who has proven more than willing to play the part of her lover even as he resists her attempts to save him.