Caroline Gray’s third season in London society ends as badly as her first two - no marriage proposal, no suitor, not even a glimmer of an interested prospect. She suspects it’s because she is far too quick to speak her mind to men who are put off by her opinions, her intellect, and her unconventional ideas. Besides, Caroline thinks there will always be next season to find a husband. However, her family’s dwindling income leaves Caroline with only one choice to secure her future: a one-way ticket to sail with the fishing fleet to India, where the son of a family friend waits.

Hannah Kent and Oliver Jennings pledged their hearts to each other as children. Now, years later, Hannah is thrilled to receive an invitation to spend the summer at Oliver’s family’s country estate. The path to wedded bliss is clear - so long as Oliver’s highbrow older brother, Damon, has ceased his juvenile antics, Hannah’s future looks bright indeed. But from the moment Hannah arrives at Summerhaven, nothing is as she expected. Oliver seems disinterested in renewing their acquaintance, and Damon is not the brutish boy she remembers but a man intent on avoiding marriage. 

Gregory Dinard, a young and inexperienced duke, finds himself in need of a companion to help him navigate the intricacies of his new role. Uncertain of his abilities and unwilling to take a chance at love, he looks for a marriage of mutual benefit rather than a match of mutual affection.

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.

Miss Amelia Fleming has a very good reason to hate the Earl of Langley. A year ago, her father drowned in the Thames after losing a fortune to Langley at cards. Now her family is broke, her fiance has broken their engagement, and the debt still hasn't been paid. Someone has to deal with the earl, but Amelia's brother doesn't have the nerve and her mother has fled to France. It's no business for a gently bred young lady, but the Earl of Langley is about to learn that Amelia Fleming is not your typical young lady . . .

When faced with a once-in-a-lifetime opportunity, Scottish chemist Russell Parkinson finds himself thrust into a role he has never wanted: that of British aristocrat. Bearing his new title of baronet, Sir Russell circulates among the ton for the sole purpose of improving Society and saving lives. His plan is moving forward—but he did not anticipate meeting the charming Selina Clifton.

Margaret Easton needs a husband, and she needs one now. Her parents are convinced that only a European will do, but Margaret wants nothing more than to stay in England. The trouble is that there is only one man Margaret can think of, or rather, one she cannot forget, and he wouldn’t do as a husband at all. Then she finds herself in his care unexpectedly, and her hunt becomes even more complicated than she could have ever imagined.

Miss Dinah Ashmore has a problem: her sister has gone missing, and the constable isn’t taking it seriously. She decides to take matters into her own hands by hiring a Bow Street Runner, not understanding the danger she has put herself in. Nathaniel Calvert, Earl of Hawthorne, is an agent of the Crown. His assignment is to root out a radical group and bring them to justice. When Miss Ashmore mistakes him as a Bow Street Runner and explains her plight, he suspects that the missing sister might be connected to his case.

When faced with an unwanted marriage, Alice Rosemeyer accepts an invitation to the estate of Larkhall. Determined to earn her future security without a husband, she begins operating as the anonymous Ace of Hearts, writing letters and offering advice on behalf of the men eager to secure a match at the close of the London season. If she can manage to keep her identity secret, her reputation intact, and avoid the arrogant house guest, Mr. Thomas Herring, she might just call herself successful.

Andalin is accustomed to her father’s frequent travels - and to being left behind. So when he returns home and instructs her to pack her belongings, she is bewildered - but there is no time for questions as she is whisked away on a mysterious journey under the cover of night. When their tense flight leads them into the forbidding Black Forest, the pair quickly finds themselves in great peril. With little hope of escape, father and daughter are spared when rescue appears in the form of the mysterious Dark Rider, a notorious deadly highwayman feared by all he meets.  

When Felicity Thurston is caught alone with a man at a ball, she must marry him to avoid a ruined reputation. But what she doesn't know is that he's the brother of the man she loves.  

Despite living at her father’s inn her entire life, Elizabeth Doyle has always managed to avoid involvement with the smugglers who frequently gather there. Until now. When a handsome smuggler is brought to her with dire injuries, Elizabeth risks everything to hide him - completely unaware that the wounded man is not who he appears to be. When an opportunity arises to infiltrate the notorious smuggling gang he believes caused his father’s death, Jonas Ainsworth, the Viscount Langton, pretends to be one of them. 

After studying art under Miss Drake, a renowned painter, Phoebe Radcliff is certain she can finally move beyond the childish mistake that’s kept her away from home. She is thrilled when Miss Drake employs her to complete a complicated ballroom renovation. Everything changes, however, the moment Miss Drake is murdered. With her last breath she imparts the location of a clue to Phoebe. Can the biggest secret of Avonthorpe Hall be true? Phoebe is tasked to finish her work in the ballroom by Miss Drake’s infuriatingly regimented yet all-too-handsome nephew, Lt. Graham Burke.

Left with an estate on the brink of bankruptcy after their father's death, Lady Marigold Fairfax and her brother open a private investigation firm marketed to the elite . . . to spy on the elite. Dubbed The Imposters, Ltd., their anonymous group soon becomes the go-to for the crème of society when they want answers delivered surreptitiously. But the many secrets Marigold learns about her peers pale in comparison to her shock when she and her brother are hired to investigate her best friend's father as a potential traitor.

In the eyes of London Society, Gillian Phelps is suitable enough. Though the ton whispers about her change of residence, any speculation remains just that: ballroom gossip. No one—not even the other Huntresses, the group of ladies she calls her dearest friends—knows that she is harboring a devastating family secret. Gillian has become adept at hiding the reality of her circumstances, but the close quarters of a house party will test her ability to conceal the crushing truth. And with so many people to deceive, the late arrival of another guest is a most unwelcome surprise.