Kiss of A Duke by Erica Ridley
This is funny, entertaining and romantic. Nicholas is a charming, amusing and talented rake with a biscuit addiction. Penelope is a smart, stubborn, impulsive and bold scientist who thinks that women are entitled to be rakes too. Nicholas goes to Christmas to confront the man who is selling a perfume that women find irresistible, turning mere mortals into rakes, which is wrong, because he had to do it naturally. He's shocked to find that it's actually a woman making it, and is determined to make her stop. She decides that instead of giving up Duke, she'll use Nicholas to complete Duchess. The two inadvertently form a friendship and bond over science. Their interactions range from funny to steamy, but they are always interesting.
I received a complimentary copy of this book from Netgalley. This is my honest and voluntary opinion of it.