The Scoundrel's Seduction House Of Trent Series, Book 3.

TEMPTATION KNOWS NO BOUNDS . . . Undercover agent Sam Hawkins has devoted his life to protecting king and country. So when he receives orders to assassinate a ruthless traitor, he doesn't question his mission. But Sam didn't know his deed had a witness-the beautiful and mysterious betrayer's wife. Now he has no choice but to take her as his prisoner-one he can neither trust . . . nor resist. Élise, Lady Dunthorpe, will do anything to escape her...