They call him the Devil Earl - a scoundrel and accused murderer who grew up on the violent London streets. A proper young lady risks more than her reputation when consorting with the roguishly handsome Lucian Langdon, but Lady Catherine Mabry believes she has no choice. To protect those she loves, she would do anything-even strike a bargain with the devil himself. Lucian desires respectability and a wife above all else, but the woman of his choosing lacks the social graces to be accepted by the aristocracy.

After six unsuccessful seasons, Miss Minerva Dodger chooses spinsterhood over fortune-hungry suitors. But thanks to the Nightingale Club, she can at least enjoy one night of pleasure. At that notorious establishment, ladies don masks before choosing a lover. The sinfully handsome duke of Ashebury is more than willing to satisfy the secretive lady's desires - and draws Minerva into an exquisite, increasingly intimate affair.

They are England's most eligible bachelors, with the most scandalous reputations. But for the right woman, even an unrepentant rogue may mend his ways…Lady Grace Mabry's ample inheritance has made it impossible for her to tell whether a suitor is in love with her…or enamored of her riches. Who better to distinguish beau from blackguard than her notorious childhood friend, the Duke of Lovingdon? With no interest in marriage, Lovingdon has long lived only for pleasure. He sees little harm in helping Grace find a proper match.

American heiress August Crenshaw has aspirations. But unlike her peers, it isn't some stuffy British lord she wants wrapped around her finger - it's Crenshaw Iron Works, the family business. When it's clear that August's outrageously progressive ways render her unsuitable for a respectable match, her parents offer up her younger sister to the highest entitled bidder instead. This simply will not do. August refuses to leave her sister to the mercy of a loveless marriage.

With her headful of wild curls and wilder ideas and an unabashed love of experiments and explosives, society has labeled Lady Imogen Loveless peculiar…and doesn’t know she’s one of the Hell’s Belles—a group of vigilantes operating outside the notice of most of London.