A stranger who appears on Kat's doorstep turns out to be one Charlotte Bristow, legal wife of Joe Bristow, the man Kat once believed herself married to—who she thought died at sea twelve years ago. Kat is jolted by Charlotte’s claims that Joe was not only murdered but that he also had amassed a small fortune before he died. Charlotte makes the cook an offer she cannot refuse—if Kat can discover the identity of Joe's murderer, Charlotte will give her a share of the fortune Joe left behind. Kat must race to catch the real killer before she loses her job and possibly her life.

Upon the death of her father, Mary Bennet’s life is thrown into turmoil. With no fortune or marriage prospects, she must rely on the kindness of her relatives. When a mysterious late-night visit by an unknown relative - a Lady Trafford from Castle Durrington - leads to an extended stay and the chance for an education, Mary gratefully accepts the opportunity. But even as she arrives at the castle, she’s faced with one mystery after another. 

Gloucestershire, 1925. A week-long house party in the country - why not? Lady Adelaide has nothing else to do, now that her year of mourning for her unfaithful husband is up and her plans to rekindle her romantic life have backfired. But when her hostess is found dead on the conservatory floor, Addie knows just who to call - Detective Inspector Devenand Hunter of Scotland Yard. Addie and Dev must work together to stop another murder, and they have some help thanks to Rupert, Addie's late and unlamented husband. Rupert needs to make amends for his louche life on earth.

Sarah Brandt is shattered when she learns that a woman has inquired at Hope’s Daughters Mission for Catherine, the abandoned child she has taken as her daughter. The woman claims she was Catherine’s nursemaid, now acting on behalf of the girl’s mother to reunite them. Unwilling to simply hand Catherine over to a complete stranger, Sarah asks Malloy to investigate. But when he goes to interview the woman at her tenement in Chelsea, he finds she has been murdered. Though her death leaves Sarah’s claim to Catherine unchallenged, her sense of justice compels her to work with Malloy to find the killer.

Cavalry captain Gabriel Lacey returns to Regency London from the Napoleonic wars, burned out, fighting melancholia, his career ended. His interest is piqued when he learns of a missing girl, possibly kidnapped by a prominent member of Parliament. Lacey's search for the girl leads to the discovery of murder, corruption, and dealings with a leader of the underworld.

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.

England, 1919. Verity Kent's grief over the loss of her husband pierces anew when she receives a cryptic letter suggesting her beloved Sidney may have committed treason before his untimely death. Determined to dull her pain with revelry, Verity's first impulse is to dismiss the derogatory claim. But the mystery sender knows too much - including the fact that during the war Verity worked for the Secret Service, something not even Sidney knew.

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.

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.

December 1899. After the death of her beloved grandmother, Cleopatra Fox moves into the luxury hotel owned by her estranged uncle in the hopes of putting hardship and loneliness behind her. But the poisoning of a guest throws her new life, and the hotel, into chaos. Cleo quickly realizes no one can be trusted, not Scotland Yard and especially not the hotel’s charming assistant manager. With the New Year’s Eve ball approaching fast and the hotel’s reputation hanging by a thread, Cleo must find the killer before the ball, and the hotel itself, are ruined. 

London 1815. Newly widowed Lily Adler is returning to a society that frowns on independent women. At a ball thrown by her oldest friend, Lady Walter, she expects the scandal, gossip, and secrets. What she doesn't expect is the dead body in Lady Walter's garden. Lily overheard the man just minutes before he was shot: young, desperate, and attempting blackmail. But she's willing to leave the matter to the local constables - until Lord Walter bribes the investigating magistrate to drop the case. Stunned, Lily realizes she's the only one with the key to catching the killer.

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...

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.

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.

When a murder is committed, a lady's companion finds herself in the role of amateur sleuth...1789, London: When Emily Fanshawe, Marchioness of Polbrook, is found strangled in her bedchamber, suspicion immediately falls on those residing in the grand house in Hanover Square. Emily's husband - Randal Fanshawe, Lord Polbrook - fled in the night and is chief suspect - much to the dismay of his family. Ottilia Draycott is brought in as the new lady's companion to Sybilla, Dowager Marchioness, and soon finds herself assisting younger son Lord Francis Fanshawe in his investigations.  

A stranger who appears on Kat's doorstep turns out to be one Charlotte Bristow, legal wife of Joe Bristow, the man Kat once believed herself married to—who she thought died at sea twelve years ago. Kat is jolted by Charlotte’s claims that Joe was not only murdered but that he also had amassed a small fortune before he died. Charlotte makes the cook an offer she cannot refuse—if Kat can discover the identity of Joe's murderer, Charlotte will give her a share of the fortune Joe left behind. Kat must race to catch the real killer before she loses her job and possibly her life.

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.

Julia Hollis’ opulent life in Victorian London crashes to pieces when her husband passes away. Worse, she is told by his bankers that he gambled away their fortune. Now the family’s hope rests on The Larkspur, an old abandoned coaching inn in the quaint village of Gresham. Driven by dread and her desire to provide for her children, Julia decides to turn the dilapidated inn into a lodging house. But can she - who was accustomed to servants attending to every need - do what needs to be done and cope when boarders begin arriving? 

Major Robert Kurland has returned to the quiet vistas of Kurland St. Mary to recuperate from the horrors of Waterloo. However injured his body may be, his mind is as active as ever. Too active, perhaps. When he glimpses a shadowy figure from his bedroom window struggling with a heavy load, the tranquil façade of the village begins to loom sinister....

Let the wicked be ashamed, and let them be silent in the grave. These ominous words, slashed from the pages of a book of Psalms, are the last threat that the darling of London society, Sir Edward Grey, receives from his killer. Before he can show them to Nicholas Brisbane, the private inquiry agent he has retained for his protection, Sir Edward collapses and dies at his London home, in the presence of his wife, Julia, and a roomful of dinner guests.

In Kent, England, the arrival of Beranger Northcott, Duke of Brightshire, causes a stir. Because with the duke comes his new American bride, who isn’t quite what anyone expects. By accepting the hand of her beloved, Emma Brinkman went from hardworking Colorado rancher to duchess. Now she’s expected to comport herself as nobility. Overnight. For Emma - stifled, homesick, and unable to shake the feeling she’s being watched - the metamorphosis is a challenge. And if Emma’s suspicions are correct, perhaps even a dangerous one.

She keeps house for Inspector Witherspoon...and keeps him on his toes. Everyone's awed by his Scotland Yard successes - but they don't know about his secret weapon. No matter how messy the murder or how dirty the deed, Mrs. Jeffries's polished detection skills are up to the task...proving that behind every great man there's a woman - and that a crime-solver's work is never done.

It is 1864 when Lizzie Martin takes up the post of companion to a wealthy widow who is also a slum landlord. Lizzie is intrigued to learn that her predecessor disappeared, supposedly having run off with an unknown man. But when the girl's body is found in the rubble of one of the recently demolished slums around the prestigious new railway station at St Pancras, Lizzie begins to wonder exactly what has been going on.

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.

Set in 1920s London, this is the inspiring story of Kate Goss' struggle against poverty, hunger and cruel family secrets. Her mother died in a fall, her father has vanished without trace, and now her aunt and cousins treat her viciously. In a freezing, vermin-infested garret, factory girl Kate has only her own brave spirit and dreams of finding her father to keep her going. She has barely enough money to feed herself, or to pay the rent. The factory where she works begins to lay off people and it isn't long before she has fallen into the hands of the violent local money-lender.