In the first novel in USA Today Bestselling Author Erica Monroe's adventurous new series, meet four women who by day are the talk of the ton, and by night England's top spies.

She wants revenge…

When bluestocking Vivian Loren becomes the governess for the wealthy Spencer family, she’s searching for clues about the murder of her brother, not a husband. But Vivian didn’t count on James Spencer, the infuriatingly handsome Duke of Abermont.

He needs a wife…

As head of Britain’s elite intelligence agency, James has no time to woo a wife. When he discovers Vivian’s quest for answers has made her a pawn in a treacherous plot, James realizes they can help each other. She’ll become his duchess, and he’ll keep her safe from one of Napoleon’s deadliest spies.

What begins as a marriage of convenience quickly becomes anything but, as they find out love is the most dangerous mission of all.