Julien Harcourt, duc de Valere, is more than willing to marry the lovely young lady his mother has chosen. Little does he know, she's been sent to prove him a spy and a traitor...And an even more dangerous secret...Sarah Smith's mission is to find out whether the Duc's trips to the Continent are as innocent as he claims, but the way he looks at her is far from innocent...Their risky game of cat and mouse propels them from the ballrooms of London to the prisons of Paris, and into a fragile love that may not survive their deceptions...