The Affair (School For Scandal #3)
Sandy Hingston

Gannon Finn was a brash Irish Lord on a tour of the Continent when he first met Christiane d'Oliveri, proprietress of the most exclusive gambling hell in Paris. He fell for her the way only an ardent youngster could--and vowed to rescue her from her life of wicked vice. But worldly, sophisticated Christiane just laughed at him.
NOW HE IS A MAN
Years later, Christiane is the headmistress of a highly proper academy for young women when Gannon comes crashing back into her life, a redoubtable rake with his niece in tow. Is he still enamored of her? Or is he merely paying her back for her cruelty--or worse, using her to try to cover up a despicable crime? Christiane is about to learn a lesson that is harder than any her academy could teach.