Finishing school failed to make a proper lady of Penelope Arrington. But as a Wallflower of West Lane, Poppy has a far more vital role—she and her three best friends have made a pact to protect each other from the clutches of dangerous, disreputable men. So when one of them is about to be married off to a duke sight unseen, Poppy makes it her mission to divine the prospective husband’s true character. If only she didn’t require the aid of London’s most unsuitable rake.