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.

Edinburgh, 1911: When Maud McIntyre and her lady’s maid, Daisy, form a detective agency, they never dream their first case will take place at a glamorous house in the Scottish Highlands. But when the duchess of Duddingston, concerned that a notorious jewelry thief will target her lavish weekend party, employs Maud to go undercover as a guest to find the culprit, the agency has its first case to solve....

Librarian Sylvia Ashe knows nothing about her past, having grown up without a father and a mother who refused to discuss him. When she stumbles upon a diary that suggests she's descended from magicians, she's skeptical. After all, magicians are special, and she's just an ordinary woman who loves books. She seeks answers from a member of the most prominent family of magicians, but she quickly learns that finding the truth won't be easy, especially when he turns out to be as artless as her, and more compelling and dangerous than books.

Yorkshire, 1845. A young wife and mother has gone missing from her home, leaving behind two small children and a large pool of blood. Just a few miles away, a humble parson’s daughters - the Brontë sisters - learn of the crime. Charlotte, Emily, and Anne Brontë are horrified and intrigued by the mysterious disappearance. These three creative, energetic, and resourceful women quickly realize that they have all the skills required to make for excellent “lady detectors.” Not yet published novelists, they have well-honed imaginations and are expert readers.

The daughter of a baronet and minor heiress, Rosalind Thorne was nearly ruined after her father abandoned the family. To survive in the only world she knew, she began to manage the affairs of some of London society's most influential women, who rely on her wit and discretion. So when artistocratic wastrel Jasper Aimesworth is found dead in London's most exclusive ballroom, Almack's, Rosalind must use her skills and connections to uncover the killer.

Cordelia Carstairs is a Shadowhunter, a warrior trained since childhood to battle demons. When her father is accused of a terrible crime, she and her brother travel to London in hopes of preventing the family’s ruin. Cordelia’s mother wants to marry her off, but Cordelia is determined to be a hero rather than a bride. Soon Cordelia encounters childhood friends James and Lucie Herondale and is drawn into their world of glittering ballrooms, secret assignations, and supernatural salons, where vampires and warlocks mingle with mermaids and magicians.

The orphaned Elsie Camden learned as a girl that there were two kinds of wizards in the world: those who pay for the power to cast spells and those, like her, born with the ability to break them. But as an unlicensed magic user, her gift is a crime. Commissioned by an underground group known as the Cowls, Elsie uses her spellbreaking to push back against the aristocrats and help the common man. Elite magic user Bacchus Kelsey is one elusive spell away from his mastership when he catches Elsie breaking an enchantment. To protect her secret, Elsie strikes a bargain.

Delve deeper into the world of the Earthsinger Chronicles with these prequel novellas full of magic, adventure, destiny, and love.

Lucy Scarpelli, an Italian dressmaker from New York, befriends socialite Rowena Langdon as she's making her summer wardrobe. It's an unlikely friendship, but one that Rowena encourages by inviting Lucy to the family mansion in Newport, Rhode Island. Grateful for Lucy's skill in creating clothes that hide her physical injury, Rowena encourages Lucy to dream of a better future.

India Steele is desperate. Her father is dead, her fiancé took her inheritance, and no one will employ her, despite years working for her watchmaker father. Indeed, the other London watchmakers seem frightened of her. Alone, poor, and at the end of her tether, India takes employment with the only person who’ll accept her–an enigmatic and mysterious man from America. A man who possesses a strange watch that rejuvenates him when he’s ill.

Below Forsaken Mountain, a plot is being hatched to overthrow the tyrant king of Trollus, and Marc is the right-hand man of its leader. His involvement is information more than one troll would kill to possess, which is why he must keep it a secret from everyone, even the girl he loves. After accidentally ruining her sister's chance to become queen, Pénélope is given one last opportunity by her father, the Duke d'Angoulême, to make herself useful: she must find proof that the boy she's in love with is conspiring against the crown.

Seven years ago a woman with too many secrets and a man with too many lies fell in love. Then she left him. Isabel's quiet life as an assistant to one of London's famous apothecaries hides a deadly secret. A secret that could see her put on trial for witchcraft if the authorities uncover the truth. But when the authority figure who turns up at her shop is Sir Nicholas Merritt, she's at risk of losing more than her life. She could lose her heart and soul, and the man she loves.

As the age of the photograph dawns in Victorian Bath, silhouette artist Agnes is struggling to keep her business afloat. Still recovering from a serious illness herself, making enough money to support her elderly mother and her orphaned nephew Cedric has never been easy, but then one of her clients is murdered shortly after sitting for Agnes, and then another, and another. Why is the killer seemingly targeting her business?

A secret beats inside Anna Thatcher's chest: An illegal clockwork heart. Anna works cog by cog - donning the moniker Technician - to supply black market medical technology to the sick and injured, against the Commissioner's tyrannical laws. Nathaniel Fremont, the Commissioner's son, sets out to capture the Technician - determined to earn his father's respect. But the more he learns about the outlaw, the more he questions whether his father's elusive affection is worth chasing at all. Their game of cat and mouse takes an abrupt turn when Eliza, a skilled assassin and spy, arrives.

Tabby has a peculiar gift: She can communicate with the recently departed. It makes her special, but it also makes her dangerous. As an orphaned child, she fled with her sister, Alice, from their charlatan aunt Bellefonte, who wanted only to exploit Tabby's gift so she could profit from the recent craze for seances. Now a young woman and tragically separated from Alice, Tabby works with her adopted father, Eli, the kind caretaker of a large Boston cemetery.