Her secret will save a legacy. But it could also break her heart when faced with a duke caught between two identities. The daughter of a famed architect, Rebecca Lambert has been raised among the nobility yet understands the circumstances of her birth. Becoming an architect is a dream, not an option, until she must assume an identity to protect her father's name. No one was pleased when Valentine St. Vincent was shockingly named the Duke of Wyndham -- least of all Valentine himself. He has always led with his fists, but now he must become the man his brother was supposed to be. When Valentine hires Rebecca's father, she takes on the work herself. But as she spends more and more time at the duke's homes, she finds herself hopelessly falling for a man she can never have. For the Duke of Wyndham must marry a woman for her dowry and respectability -- two things Rebecca can never provide. Will Rebecca and Val resign themselves to the lives chosen for them, or those they were born to live? Designs on a Duke is a steamy regency romance.