London, 1885. Amelie Hampton is a hopeless romantic, which makes her the perfect columnist to answer lonely heart letters in The Marriage Gazette. When Amelie plays matchmaker with two anonymous lonely hearts, she also decides to secretly observe the couple’s blind date. To her surprise, the man who appears for the rendezvous is Harold Radcliffe - a grieving widower and a member of Amelie’s book club.

England. 1923. After a year away at finishing school where she learned etiquette, deportment, and the difference between a fish fork and a salad one, Kitty Worthington is eager to return home. But minutes after she and her brother Ned board the Golden Arrow, the unthinkable happens. A woman with a mysterious connection to her brother is poisoned, and the murderer can only be someone aboard the train. When Scotland Yard hones on Ned as the main suspect, Kitty sets out to investigate.

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.

Once the most charming rake in London, John Aubin lost everything when he overheard a powerful earl’s fraudulent dealings. Branded a liar and cast out of society, he now lives under an assumed name, working in the very orphanage the earl owns. But Aubin’s purpose isn’t charity—it’s revenge. Sober and focused for the first time in his life, he plans to expose the earl’s corruption and reclaim his good name. Nothing will stand in his way—until he meets her.

Elizabeth Black is the headmistress of a girls' school in 1830s Victorian London. She is also a well-respected author of stories written both for and about the upper-class ladies of Victorian society. But by night, she writes very different kinds of stories - the Penny Dreadfuls that are all the rage among the working-class men. Under the pseudonym Charles King, Elizabeth has written about dashing heroes fighting supernatural threats, intelligent detectives solving grisly murders, and dangerous outlaws romancing helpless women.

Lucy, a smart, attractive, and well-respected botanist, travels to Blackwell Manor to take care of her sick cousin, Kate, who is married to Miles' younger brother. For Lucy, the trip is a welcome respite from her work and recent discovery of a breakthrough serum that could eliminate the scourge of vampires from London. But Lucy finds more than she bargained for when she arrives at the Manor.

Sowerby, England, 1802. Miss Genevieve Wilde—a magistrate’s daughter and independent heiress—is determined to meet life’s challenges all on her own, just as her late-father had taught her. So when her father’s pocket watch is stolen, she will do anything to get it back, especially when the local authorities prove incompetent. Upon reading an advertisement in the paper, she takes a chance and contacts a thief-taker to find the watch. It’s a choice Ginny regrets when former Bow Street officer Jack Travers arrives on her doorstep.

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.

Lady Sophronia Bremerton is a far cry from the typical debutante, but she’s the toast of London’s upper class for one simple reason: she’s a society columnist for the London Illustrated News, and the gentry loves seeing their exploits printed in the gossip pages. But Sophie has bigger plans - she aspires to be an investigative reporter. When a stuffy ballroom during yet another Season proves to be nothing more than the usual rumor mill, Sophie seeks respite in the library, alongside four other young women who, for their own reasons, are also looking for escape.

Theresia Dvorak has nothing left of her parents—nothing save her dowry, a priceless crystal vase stolen and sold by her own stepmother. Theresia will do anything to secure what is rightfully hers—even assume a false identity and steal her future back. When she gains entrance to a house party and has a memorable run-in with the handsome navel captain Rolland Reese, her mission is compromised.

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.

Hidden away in rural Devonshire, Phyllida Satterthwaite has always been considered more odd than beautiful. But in London, her oddity has made her a sensation. Far worse, it’s caught the eye of the sinister Duke of Moreland - a notorious art collector obsessed with acquiring one-of-a-kind treasures. To escape the duke’s clutches, she’s going to need a little help. Captain Arthur Heywood’s days of heroism are long past. Grievously injured in the Peninsular War, he can no longer walk unaided, let alone shoot a pistol. What use can he possibly be to a damsel in distress?

Elena MacKinnon has spent the last seven years training to become a proper English lady. When her childhood friend, Captain Theo Donovan, returns from serving in the Navy, he brings along with him Elena’s humiliation for the ill-advised and ardent love letter she wrote him before his departure, which he ignored entirely. Elena hopes to simultaneously stifle his memory of the letter and make him regret overlooking her, showing him just how fine an English lady she can be. The only problem? She is not English but a proud Scot—and her heart may be more enamored with Theo than ever.

Anthony Blake is in love with his best friend's sister, Sophia Elliot. But his plans to court her are put on hold when he is forced to resume his role as an undercover spy for the Crown. A secret document listing the names of the entire network of British spies - including his own - has been stolen. To protect Sophia, Anthony cuts off all ties to her and exchanges his life as an honorable earl for the facade of a flirtatious playboy.

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.