There are 4 books in the Devil's Duke series. The newest book is The Prince which came out in 2018.

1
The Rogue

Book cover of The Rogue
Book #1 of The Devil's Duke Lady Constance Read is independent, beautiful, and in need of a husband-now. The last man on earth she wants is the rogue who broke her heart six years ago, never mind that his kisses are scorching hot ...Evan Saint-Andre Sterling is rich, scarred, and…
When you buy books, we may earn a commission that helps keep our lights on (or join the rebellion as a member).

2
The Earl

Book cover of The Earl
How does a bookish lady bring an arrogant lord to his knees? Entice him to Scotland, strip him of titles and riches, and make him prove what sort of man he truly is. Opposites...Handsome, wealthy, and sublimely confident, Colin Gray, the new Earl of Egremoor, has vowed to unmask the…

3
The Duke

Book cover of The Duke
Katharine Ashe continues her lush and sensual Devil's Duke series with a sweeping story of unbreakable love Six years ago, when Lady Amarantha Vale was an innocent in a foreign land and Gabriel Hume was a young naval officer, they met ...and played with fire. Now Gabriel is the dark…

4
The Prince

Book cover of The Prince

The temptation of her lips...

Libby Shaw refuses to accept society's dictates. She's determined to become a member of Edinburgh's all-male Royal College of Surgeons. Disguising herself as a man, she attends the surgical theater and fools everyone-except the one man who has never forgotten the shape of her exquisitely…