Lady Ludmilla Windmere is mortified. The spinster extraordinaire has fallen in love with her best friend, and that cannot be. The problem? She hasn't met him. Not once. For they have only ever corresponded by letter. When she sets out to uncover his identity, her world shatters. For Addy turns out to be none other but London's worst rake. Adrian St. Addington is perturbed. The rakehell extraordinaire is developing a marked tendre for a spinster, and that cannot be. The problem? She might be mistaking him for someone he is not. Or, what is worse, know precisely who he is.

When a beautiful stranger ducks into his bookshop during a rainstorm, Cale Cameron, well-known rake, is instantly attracted to her. Elizabeth, Lady Thornhill, is restless and hungers for something she cannot name. Society would never accept a countess and a mere bookseller, so they agree to a one week affair to indulge their desire. As their passion ignites and their connection grows, Elizabeth threatens the one thing Cale has protected above all else—his heart.

Emery Jenson came to Wildwood ten years ago with her parents, hired to be the estate's steward and housekeeper. She has taken on more responsibility as her father's mind grows weak and now runs the ducal country seat. When the new duke shows up, she schemes to hide her father's deficiencies, believing the Duke of Winslow won't remain long.

Jasper Sutton—London’s most dedicated scoundrel—needs a wife, and he needs one quickly. He needs one yesterday, in fact. His requirements are precise: she must be capable of mothering the wild twin daughters who have unexpectedly appeared in his life, and so must possess the patience of a saint and the understanding of an angel. Better still if she is plain and has no expectation of a true marriage. He is not about to reform his ways.

Bow Street's best investigator, Sir Brook Derring, is hailed as a hero by the ton, but he cares little for the praise or the women. He fell in love once, with Lady Lillian-Anne Lennox, and shortly thereafter lost all romantic notions. As the eldest daughter of the duke of Lennox, Lila has everything but the freedom to follow her heart. All that is taken away when she's kidnapped by a London crime lord, but she knows that someone must be looking for her.