Northumberland, 1809: A beautiful young heiress disappears from her locked bedchamber at Linn Hagh. The local constables are baffled and the townsfolk cry "witchcraft". The heiress' uncle summons help from Detective Lavender and his assistant, Constable Woods, who face one of their most challenging cases.

When the body of a young man is found stuffed into the tomb of a medieval knight, Parish Constable Daniel Haze is tasked with investigating his first solo murder case. Suspicion instantly falls on the only stranger to arrive in the village of Birch Hill just before the crime took place, but the American captain proves to be an unexpected asset. A former soldier and a skilled surgeon, Jason Redmond is not only willing to assist Haze with the investigation but will risk his own safety to apprehend the killer.

When her husband goes "missing in action", Jemma James returns to the city of her birth to set up a private detective agency with her best friend, Roberta "Bobbie" Baker, with whom she shares a passionate love of Golden Age crime fiction. These two enterprising young women soon find themselves embroiled in a series of mysterious cases, shadowing blackmailers and bigamists, and investigating the perplexing history of a wealthy young woman who seems determined to wipe out her past. And it's not long before they stumble across an unsolved murder.

Detective Inspector Ian Hamilton is no stranger to Edinburgh's darkest crimes. Scarred by the mysterious fire that killed his parents, he faces his toughest case yet when a young man is found strangled in Holyrood Park. With little evidence aside from a strange playing card found on the body, Hamilton engages the help of his aunt, a gifted photographer, and George Pearson, a librarian with a shared interest in the criminal mind.

The Earl of Wrexford possesses a brilliant scientific mind, but boredom and pride lead him to reckless behavior. He does not suffer fools gladly. So when pompous, pious Reverend Josiah Holworthy publicly condemns him for debauchery, Wrexford unsheathes his rapier-sharp wit and strikes back. As their war of words escalates, London's most popular satirical cartoonist, A. J. Quill, skewers them both.

England, 1925. After years shut away from the world, former detective Lord Edgington of Cranley Hall plans a grand ball to celebrate his seventy-fifth birthday. But when someone starts bumping off members of his scheming family, the old man enlists his teenage grandson to help find the killer, before one of them is next.

June 1933. Independent, young Kitty Underhay has been left in charge of her family’s hotel, The Dolphin, on the tranquil English coast. But when several rooms are broken into and searched, including Kitty’s own, she quickly realizes that something out of the ordinary is afoot at the hotel. Soon, rumors are flying in the cozy town that someone is on the hunt for a stolen ruby. A ruby that Kitty’s mother may well have possessed when she herself went missing during the Great War.

Miss Busby helped Major Heathcliff Lennox solve a series of murders at Bloxford in the Cotswolds. Now, she finds herself drawn into a new murder, but this time, it's just her, and she must rely on her sharp mind and sharper wits to catch a Cotswolds killer, along with a handsome police inspector and a reporter who's keen to make her mark.

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.

Lady Emily Hardcastle is an eccentric widow with a secret past. Florence Armstrong, her maid and confidante, is an expert in martial arts. The year is 1908 and they've just moved from London to the country, hoping for a quiet life. But it is not long before Lady Hardcastle is forced out of her self-imposed retirement. There's a dead body in the woods, and the police are on the wrong scent. Lady Hardcastle makes some enquiries of her own, and it seems she knows a surprising amount about crime investigation...

Following the death of her husband, Lady Darby has taken refuge at her sister's estate, finding solace in her passion for painting. But when one of the house guests is murdered, her brother-in-law asks her to aid the insufferable Sebastian Gage - a fellow guest with some experience as an inquiry agent. While Gage is clearly more competent than she first assumed, Kiera isn't about to let her guard down, as accusations and rumors swirl.

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.

Spring, 1918. The Great War is at a crucial stage, the Germans are making one last push into France, and the Allies are struggling to hold them back. Battle lines are shifting, and men, and their machines, are being sent up and down the front to shore up defenses. Major Heathcliff Lennox, and his batman Greggs, are told to report to their new HQ. They set off on a sunlit day to fly the distance, but the enemy is never far away, and disaster strikes. They're sent crashing to the ground behind enemy lines, where life, death, and love await.

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.

The young man with the shock of white-blond hair lay spread-eagled on the floor, surrounded by fallen books. His hand reached out to the scattered pages, as though he was trying to tell her something. But who is he? How did he come to be killed in Flora’s ordinary little bookshop? Flora finds out he was staying at the Priory Hotel, and when the gardener suddenly dies in its beautiful grounds only a few days later, she is certain that something untoward is happening in her quiet village by the sea.

It's 1811, and the threat of revolution haunts the upper classes of King George III's England. Then a beautiful young woman is found savagely murdered on the altar steps of an ancient church near Westminster Abbey. A dueling pistol found at the scene and the damning testimony of a witness both point to one man - Sebastian St. Cyr, Viscount Devlin, a brilliant young nobleman shattered by his experience in the Napoleonic Wars.

London, 1882. Alec Lonsdale, a young reporter on the Pall Mall Gazette, is working on a story about a fatal house fire. But the postmortem on the victim produces shocking results: Patrick Donovan's death was no accident. But why would someone murder a humble shop assistant and steal part of his brain? When a second body is discovered, its throat cut, and then a third, Lonsdale and his spirited female colleague, Hulda Friederichs, begin to uncover evidence of a conspiracy that reaches to the highest echelons of Victorian society.

Sir Richard Francis Burton and Algernon Charles Swinburne are sucked into the perilous depths of a moral and ethical vacuum when Lord Palmerston commissions Burton to investigate assaults on young women committed by a weird apparition known as Spring Heeled Jack - and to find out why werewolves are terrorizing London's East End.

In the year 1780, Harriet Westerman, the willful mistress of a country manor in Sussex, finds a dead man on her grounds with a ring bearing the crest of Thornleigh Hall in his pocket. Not one to be bound by convention or to shy away from adventure, she recruits a reclusive local anatomist named Gabriel Crowther to help her find the murderer, and historical suspense's newest investigative duo is born.

Jack the Ripper begins his reign of terror. Miss Sarah Bain, a photographer, supplements her meager income by taking illicit boudoir photographs of the town's local ladies of the night. But when two of her models are found gruesomely murdered within weeks of one another, Sarah begins to suspect it's more than mere coincidence.

In Victorian England, orphan Mary Quinn lives on the edge. Sentenced as a thief at the age of 12, she’s rescued from the gallows by a woman posing as a prison warden. In her new home, Miss Scrimshaw’s Academy for Girls, Mary acquires a singular education, fine manners, and a surprising opportunity. The school is a cover for the Agency — an elite, top secret corps of female investigators with a reputation for results — and at 17, Mary’s about to join their ranks.

Lady Marian Lawrence is in London to snare a rich husband to save her family from ruin - a difficult task given her biting wit and lack of beauty. Hiding her true self, Marian is about to win the wealthy and amiable Lord Darley - until the detestable Reginald Montague blocks their path to the altar. Reginald Montague has vowed to never marry and is determined to keep his bestfriend Darley from being snared by a fortune hunter.

The last thing Lord Nicholas Kincaid expected to see in the gloom of a London tavern was a vision of loveliness. And when she led him to a bedchamber with a come-hither smile, there was no question of resisting - until he realized the lying wench meant to render him senseless so the landlord could rob him blind!

London, 1889. For Ira Adler, former rent-boy and present plaything of crime lord Cain Goddard, stealing back the statue from Goddard's blackmailer should have been a doddle. But inside the statue is evidence that could put Goddard away for a long time under the sodomy laws, and everyone's after it, including Ira's bitter ex, Dr. Timothy Lazarus.

India, 1837: William Avery is a young soldier with few prospects except rotting away in campaigns in India; Jeremiah Blake is a secret political agent gone native, a genius at languages and disguises, disenchanted with the whole ethos of British rule, but who cannot resist the challenge of an unresolved mystery.

London, September 1666. The Great Fire rages through the city, consuming everything in its path. Even the impregnable cathedral of St. Paul's is engulfed in flames and reduced to ruins. Among the crowds watching its destruction is James Marwood, son of a disgraced printer and reluctant government informer. In the aftermath of the fire, a semi-mummified body is discovered in the ashes of St. Paul's, in a tomb that should have been empty. The man's body has been mutilated, and his thumbs have been tied behind his back.

Seventeen-year-old Anglet Sutonga lives repairing the chimneys, towers, and spires of the city of Bar-Selehm. Dramatically different communities live and work alongside each other. The white Feldish command the nation's higher echelons of society. The native Mahweni are divided between city life and the savannah. And then there's Ang, part of the Lani community who immigrated over generations ago as servants and now mostly live in poverty on Bar-Selehm's edges.

Sherlock Holmes is an unparalleled genius who uses the gift of deduction and reason to solve the most vexing of crimes. Warlock Holmes, however, is an idiot. A good man, perhaps; a font of arcane power, certainly. But he’s brilliantly dim. Frankly, he couldn’t deduce his way out of a paper bag. The only things he has really got going for him are the might of a thousand demons and his stalwart flatmate. Thankfully, Dr. Watson is always there to aid him through the treacherous shoals of Victorian propriety...

Evaline Stoker and Mina Holmes never meant to get into the family business. But when you're the sister of Bram and the niece of Sherlock, vampire hunting and mystery solving are in your blood. And so, when two society girls go missing, there's no one more qualified to investigate. Now, the fierce Evaline and the logical Mina must resolve their rivalry, in order to navigate the advances of not just one, but three mysterious gentlemen, and solve a murder with only one clue: the strange Egyptian scarab.

Abducted as a child-heiress, Honor Larke escapes to London seeking justice from the only lawyer she knows: the brilliant Sir Thomas More. With More as her affectionate guardian, Honor grows to womanhood, when the glitter of the royal court lures her to attend Her Majesty, Queen Catherine of Aragon. But life at Henry VIII’s court holds more than artifice for an intelligent observer, and Honor knows how to watch - and when to act.