The Return of the Duke by Lorraine Heath

When his father, the Duke of Wolfford, is hanged for an assassination attempt on Queen Victoria, Marcus Stanwick is stripped of everything. Vowing to return honour to his family, he seeks to expose the others involved in the treasonous plot and bring them to justice. His search forces him to turn to a woman he despises for her unforgivable betrayal–a woman known as the heartless harlot. Harbouring secrets, Esme Lancaster has her own reasons for wanting to discover who’s behind the conspiracy that’s still afoot. She doesn’t trust Marcus but can’t deny… Read more.