After losing her fiancé to a terrible accident, Miss Katherine Blackmore found contentment as a matchmaker to the members of Society. Working alongside her sisters, they strive to secure the most unlikely people with love matches. Everything is perfect until an infuriating lord steps into her office, turning her world upside down. Edward Simpson, the Marquess of Berkshire, has a problem. His sister needs to marry, and quickly. When he approaches Miss Blackmore to hire her services, he does so poorly and ends up soundly insulting her. Luckily, he fares better with his second attempt.

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.

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.

Miss Lizette Kent's life is in shambles. Not only did her mother just pass away, but she has been left without the means to provide for herself. While she is contemplating her future, she encounters an unexpected and vexing man: Tristan Westcott, a man that mistakenly seems to believe that she is the daughter of an earl, despite her insistence that she is not.

Patience Whitford spent the last two seasons watching her elder sisters make grand matches. She is thoroughly apprehensive with the notion of being limited by marriage. But that seems like an inconsequential concern with no prospects on the horizon to follow in her sisters' footsteps. And to make matters worse, she is uncommonly jealous of all of the military officers she's befriended and their grand adventures. When Major Ashley Stuart is assigned to investigate some petty crimes near his brother's estate in Greenwich, it soon becomes apparent that there is something much larger going on.

Rose Portman, determined spinster, has a bit of a predicament. Her great aunt has challenged her to get married before Twelfth Night and promised that, if she does, Rose will inherit the perfect country cottage with the funds to maintain it. Rose has always wanted to get away from London and Society, and this could be her chance! But the catch is that Rose has to attend a holiday house party in York and find a husband among the guests. Worst of all… she must marry for love.

Lucy Bell burns with determination. Convinced an arrogant aristocrat is to blame for her expulsion from her beloved school, the penniless girl sets out to visit her best friend to help her undo the catastrophe. But when a storm on the road leaves her in a compromising position with a handsome gardener, she is swept away by his gruff kindness.

Despite the fact that her daughter is not cooperating, Caroline, Duchess of Riverton, is determined to ensure every one of her children marries someone they love as much as she loved their late father. William, the widowered Earl of Blackstone, is delighted to have his days of escorting daughters approaching an end.

William Yorke faces a tall order: convince people he is worthy of the Dukedom of Rockwood that has unexpectedly fallen to him. Returning from London to his enormous estate, he breaks his journey at an inn and finds himself witness to a drunkard selling his wife to the highest bidder. William outbids the coarse competition and offers the woman a position as housemaid at his estate, uncomfortably aware that his impulsive chivalry will lead to talk—something he abhors.

Grace Sinclair has been callously cast out of her home. And though taken in as an orphaned child by the vicar and his wife, her unsurpassed beauty makes it impossible for her to remain in the vicar’s household - with two daughters of their own about to enter Society, the vicar and his wife see Grace as nothing but competition. Thankfully, Grace’s estranged Aunt Bell has agreed to take her in to her home in London. But Grace soon learns her situation has just gotten much worse.

Hampton Hall's new owner has the villagers of St. Hampton Heath all aflutter - all except Lavinia Ellison. The reverend's daughter cares for those who are poor and sick, and the seventh Earl of Hawkesbury definitely does not meet that criteria. His refusal to take his responsibilities seriously, or even darken the door of the church, leave her convinced he is as arrogant and reckless as his brother - his brother who stole the most important person in Lavinia's world.

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.

Much to her father's dismay, Miss Amelia Buxton aspires to become a spinster, just like her eccentric aunt. Growing up with parents who married for every reason but love, she has never seen a joyful marriage. When Amelia requests a summer trip to the legendary waters of Brighton, her father allows her the excursion, but with one requirement: She must return engaged, or agree to the proposal of the man of his choosing.

Lucas Berkeley has a secret—one he cannot risk anyone discovering. After all, a future marquess belongs in drawing rooms, not underground boxing circles. Yet with a painful past and a need to control every aspect of his life, it is his only outlet. And when his brother begins to court the one woman who could ruin everything, Lucas needs the secret diversion more than ever.

Richard Graham cannot believe his luck when his great-aunt promises him a fortune if he’s married by Twelfth Night. He can finally clear his father’s debts and save his beloved Belside Manor. Miss Ruth Steele meets all the marriageable requirements his aunt insisted upon, but he’ll need the help of her clever and beautiful sister, Grace, to win the quiet woman over. Not only is Grace a dear friend to his younger sister, with loyalties to his family estate, but she also happens to owe him a generous favor.