The Counterfeit Countess

Maggie thought she was married to an earl but it seems that her late and unlamented husband lied to her from the day they met. Now—penniless and stranded in London—she has thrown herself on the mercy of the real Lord Warwick. What's a counterfeit countess to do? 
Edward, the Earl of Warwick, desires only to get rid of the beautiful woman who arrived at his house with no less than fourteen trunks, a younger sister, a maid, and a very large cat. Her preposterous explanation is of no importance—but her late husband held the clue to the identity of England's greatest traitor, a clue the Foreign Service must get at any cost. Edward will have to guard her night and day—but he cannot guard his heart.