At the end of her first unsuccessful season out in society, Lady Georgiana has all but given up on attracting a suitable man - until she receives an invitation to a masked Halloween ball at Broxley Manor. Georgie is uncertain why she was invited, until she learns that the royal family intends to marry her off to a foreign prince, one reputed to be mad.

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.

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...

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.

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.

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.

As the city prepares to celebrate Queen Victoria's golden jubilee, Veronica Speedwell is marking a milestone of her own. After burying her spinster aunt, the orphaned Veronica is free to resume her world travels in pursuit of scientific inquiry - and the occasional romantic dalliance. As familiar with hunting butterflies as she is fending off admirers, Veronica wields her butterfly net and a hatpin with equal aplomb, and with her last connection to England gone, she intends to embark upon the journey of a lifetime.

Determined to locate a kidnapped dog, Michael Bromley, Duke of Woriton, isn’t thrilled to be saddled with a flighty female insisting on helping, except that Bitsy has a great deal more sense than he expected—and a sharp tongue to match. Still, what’s a scientist to do but continue to pursue an outcome, however unexpected it may be? But chemistry is all about attraction, and this is one formula with some hilariously romantic results.

Twenty-six-year-old Beatrice Hyde-Clare is far too shy to investigate the suspicious death of a fellow guest in the Lake District. A spinster who lives on the sufferance of her relatives, she would certainly not presume to search the rooms of her host's son and his friend looking for evidence. Reared in the twin virtues of deference and docility, she would absolutely never think to question the imperious Duke of Kesgrave about anything, let alone how he chose to represent the incident to the local constable. And yet that's exactly what she does.

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.

Elizabeth Bennet inherits a stunning fortune. Mr. Darcy left Hertfordshire to escape his attraction to her—will her sudden wealth pull them together or drive them further apart? February of 1812 brings startling news to Longbourn; a distant relation has left Elizabeth an astonishing fortune. She is overwhelmed by a multitude of suitors in pursuit of her wealth but is determined to never marry a man who only loves her money.

England, 1865: Newspaper columnist Lady Katherine Bascomb finds herself the subject of speculation when her latest article leads to an arrest in the murders plaguing London. The English believe women ought not to write about such vulgar things as crime, and a particularly attractive detective inspector is incensed that she's interfered with his investigation. To escape her sudden notoriety, Katherine heads to the country - only to witness a murder upon her arrival.

London, 1923. Newly minted research assistant Saffron Everleigh is the first woman to hold the position at University College of London. When she attends a dinner party for the school, she expects to engage in conversations about the university's large expedition to the Amazon. What she doesn’t expect is for Mrs. Henry, one of the professors’ wives, to drop to the floor, poisoned by an unknown toxin. Dr. Maxwell, Saffron’s mentor, is the main suspect, and evidence quickly mounts.

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.

In 1808, Elizabeth Bennet is young, curious, and in possession of an invitation to a London party which she ought not to attend. Unable to resist the temptation, Elizabeth indulges her wish to see a party of the beau monde and finds herself in a dangerous situation. She is saved from a desperate fate by Mr. Darcy of Pemberley, but relief is short-lived. Mr Gardiner arrives and demands satisfaction on behalf of his young niece’s honor.

After receiving a distressing letter from a friend, Lady Anne Addison wastes no time in traveling to Yorkshire to offer whatever help she can. She has no idea what she'll find there, but she certainly wasn't expecting to be met by tales of a werewolf terrorizing the area - nor the dead body she discovers upon arriving. Driven by curiosity and a keen intelligence, Lady Anne dismisses the notion of such a beast, but she's nonetheless drawn into the mysteries by the secrecy surrounding her friend and the infuriating yet enticing Lord Darkefell.

Determined to find the men responsible for her disgraced father's murder, Lady Arianna Hadley disguises herself as a man and contrives to be hired as a chef in one of London's aristocratic households. But when the prince regent is poisoned by Arianna's special chocolate dessert, she finds her own quest has become intertwined with a far more deadly intrigue. The earl of Saybrook is asked by the government to investigate. When someone tries to kill them both, they become reluctant allies in the hunt to discover what evil is afoot.

London, October 1886: Trapped in a troubled marriage, Lucy Lawrence is ripe for an adventure. But when she meets the enigmatic Phineas Stone, over the body of her husband in the mortuary, her world begins to fall apart. When her late husband's secrets spill from the grave and her life is threatened by the leader of London's most notorious gang, Lucy must find the strength to rise to the challenge. But who can she trust, and how is she to stay out of the murderous clutches of London's most dangerous criminal?

The shocking murder of Sir Henry Claybourne leaves Regency London shaken and horror-struck. But for genteel spinster Miss Emmeline St. Germaine, the crime slices far too close to home. Just hours before the knight's death she held a dagger to him, threatening him to stay silent as she rescued a scullery maid he had procured for his pleasure. Did the man - or woman - who murdered the knight know of her visit? Her secret identity at risk, her reputation and life in jeopardy, Emmeline must solve the crime or face scandalous exposure and ruination for a crime she did not commit.

Before Jack the Ripper terrorised London, Police Inspector Samuel Ravenscroft patrolled the streets of Whitechapel. Clever and hard-working, Ravenscroft nonetheless has the worst record in the force. He lets a murderer escape during a chase and is banished to the spa town of Malvern for a water treatment to cure his asthma. Ravenscroft accepts a dinner invitation from a new acquaintance, Jabez Pitzer. Before dinner, the maid finds Pitzer slumped over his desk - dead. Ravenscroft immediately recognises the signs - Pitzer has been poisoned.