For fans of Bridgerton and Georgette Heyer. The Duke of Thayle has bet his entire fortune on the outcome of a horse race against his old nemesis, Lord Stappleton. When Stappleton acquires the fastest horse in England, Thayle seems set to lose the shirt off his back. But news of the infamous bet brings a mysterious young widow to the Duke's doorstep. 'Mrs Harrow' promises that her remarkable stallion can outrun any horse in the land. In exchange for letting Thayle race her horse, she wants only the chance to be presented to society and enjoy a season in London. This seems like a fair proposition to the Duke, but as the season progresses, he begins to realize he may be getting more than he bargained for.