Lady Madalene Ramsbury has been summoned home from Miss Bell’s Finishing School to some unfortunate news. In three weeks, she is to be married to a man she’s never met. Rather than face a life she does not want; she flees from her own engagement party and elicits help from a most unlikely source. Society’s golden boy, Everett, the Marquess of Northampton, was outraged when a young woman suddenly appeared in his curricle. Was she attempting to trap him into an unwanted marriage? It would be just like some overzealous mother to put her up to such a ploy.

Born with a perfect memory, Lady Elizabeth Beckett has become one of the world's most notorious spies, despite being the daughter of a duke. She is shielded only by her code name: Shadow. When young ladies of High Society begin disappearing from London, Eliza has no doubt who is orchestrating these crimes; a heinous man she has been investigating for years. Vowing to save them before they are sold to the highest bidder, she must risk everything to stop him.

Prudence Leigh is well on her way to being a spinster. That dreadful future may be a few years away, but with every man chasing after her beautiful younger sister, Prudence has little hope of finding love. But when she receives a letter filled with heartfelt declarations, she discovers it’s not too late for her. But for such an ardent beau in writing, the gentleman acts quite strangely in person… Penmanship is not an important skill. Or so Dr. Parker Humphreys thought—until his love letter is delivered to the wrong sister!

Before entering into a supremely-advantageous arranged marriage with James Clay, the new Duke of Earnhurst, clever, independent Lady Meg Pinwell has to see if he’s really the rake he’s rumored to be. But how is a well-bred young lady going to make sure he’s all that he seems? With the help of her Aunt Clara, they plan some discreet reconnaissance at the Duke’s country estate. Meg will pretend to be her aunt’s maid/companion to see the true state of affairs at Earnhurst Manor.

Fredericka Hale needs a husband, and fast. She’s been caring for her deceased sister’s three young children, and now a childless cousin has petitioned the court for custody. Fredericka is powerless to stop her, but having a husband might sway the ruling. The last thing Fredericka wants is a hurried-up marriage to a man she doesn’t know―much less love, but she’ll do it for the children. So when the handsome Duke of Wyatthaven shows up with a proposal, she accepts. He’ll help her, and in return, they’ll lead separate lives.