I agree with the other reviewer that said that this book is not what one would expect based on the catchy, titillating title and light-hearted summary on the back cover, but "The Naked Duke" is a very readable Regency romance with an engaging hero and reasonably good heroine.
Miss Sarah Hamilton, in compliance with her father's deathbed wish, has traveled from Philadelphia to England (*very* improbably--completely *alone*) to visit her uncle, the Earl of Westbrooke. Exhausted, she stops for the night at an inn near her uncle's estate and is nearly turned away by the innkeeper (as a presumed whore) because of her solitary, disheveled state. When a semi-drunk gentleman offers her a open room, she believes that it is a case of mistaken identity (and, of course, she is right!), but is too grateful for the shelter to investigate exactly *whose* room she is taking. When she awakens the next morning, she finds a naked and amorous man in bed with her and her screaming protest brings them quite an audience. Her bedmate turns out to be the Duke of Alvord, who offers her marriage since he has unwittingly compromised her. She, of course, refuses his offer because he is young, handsome, charming, rich and titled and she is penniless and alone in a strange country with a ruined reputation and no references or employment. (Ha! No really, she has some other reasons for refusing his amazingly generous offer, but they make just about as much sense as that!)
James, the Duke of Alvord, is a really good hero--a gorgeous paragon really (except for his rakish reputation and the problem of his evil cousin Richard who keeps launching murder attempts against James in an effort to usurp the dukedom.) Sarah is an okay heroine but a bit inconsistent--by turns stunningly naive and improbably competent (has *no idea* how babies are made, but *does* know the basics of dirty street-fighting....) James is crazy about her (although he spends more time fantasizing about getting her back into his bed than he does talking to her.) Richard, the evil cousin, is a pretty one-dimensional psychotic villain and insane rapist (no redeeming qualities *at all*!) All the villains in the book are homosexuals or bisexuals (a not very PC move by the author.)
The plot moves along pretty well, but takes some dark turns (so be warned--Richard is *really* a bad guy!) I found Sarah's repeated refusals of James's offers of marriage and insistence that she would look for employment to be ultimately annoying, and the details of James's sexual history (Sarah's real reason for rejecting his proposal is James's reputation as a rake) to be inconsistent with the rest of his behavior in the book. The dialogue is generally witty, but with many, many modern phrases (except for Sarah's cousin Robbie, who seems to be the only one in the book talking "Regency-speak" like an escapee from a Georgette Heyer novel.)
In summary, this is a quick, enjoyable read with a really great hero and some very clever dialogue.
Recommended to Regency romance lovers, particularly to those who like a good bodice-ripping villain.