At the lush Villa Calypso on the French Riviera, a dying billionaire launches a devious plan: at midnight each day he appoints a new heir to his vast fortune. If he dies within 24 hours, that person takes it all. If not, their chance is gone forever. Yet these are no ordinary beneficiaries, these are men who crossed him, women who deceived him and distant relations intent on reclaiming the family fortune. All are determined to lend death a hand and outwit their rivals, and retired Scotland Yard detective Jasper, in pursuit of the prize.

While attending a lavish masked ball in Venice, retired Scotland Yard Detective Jasper has a shock when, at the midnight démasqué, he spots a woman whose accidental death he investigated in England three years ago. Even more stunned than Jasper is the woman's husband, Lord Bantham, who has since remarried, not to mention his new wife who sees her acquired position and wealth slip away. Then there are her old friends who all seem to have known more about the 'accident' than they ever let on. Then, the resurrected lady is found dead the next morning.

Fresh from teaching at her prestigious Swiss boarding school, Miss Atalanta Ashford suddenly finds herself the most eligible young lady in society when she inherits her grandfather’s substantial fortune. But with this fortune, and an elegant new Parisian home, comes a legacy passed down from grandfather to granddaughter…sleuthing discreetly for Europe’s elite. This young lady isn’t one to back down from a challenge and Miss Ashford must depend on her sharp wit and charm to solve her first case.

December 1927. Mystery-writer Marius Quin has one previous bestseller, endless looming mortgage payments, and no idea how to write his next book. When his childhood friend Lady Isabella Montague invites him to an intimate New Year’s Eve party hosted by a narcissistic actor, Marius seizes upon the distraction. With his perpetually glum Basset hound along for the ride, he navigates the snowy lanes to the opulent estate of Everham Hall. As the celebrations begin, fireworks light up the sky, champagne corks pop, and then the host is murdered…

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.

1915, London: Working in the dusty bookshop that her Aunt Violet mysteriously inherited, Hannah Merrill is accustomed to finding twists in every tale. But discovering her beloved best friend Lily-Anne – with a paperknife through her heart – in the middle of the bookshop, is not a plotline she saw coming. The case is anything but textbook. With the discovery of a coded German message, and Hannah’s instinct that Lily-Anne’s husband is keeping secrets, she determines to get to the bottom of it. She can’t do it alone though.

Nestled high in the Tuscan hills lies Villa Volpone, home to renowned crime writer Jonah Moore and his creative writing course. It’s also the last place retired DCI Dan Armstrong expected to spend his retirement! Dan’s no writer, but maybe this break will help him to think about the next chapter in his own life story? But only days into the course, Jonah Moore is found stabbed to death with his award-winning silver dagger! And Dan finds himself pulled out of retirement with a killer to catch.

Stephen Munro, a demobbed army officer, reconciles himself to taking a job as a footman to make ends meet. Employed at Wintringham Hall, the delightful but decaying Sussex country residence of the elderly Lady Susan Carey, his first task entails welcoming her eccentric guests to a weekend house-party, at which her bombastic nephew—who recognises Stephen from his former life—decides that an after-dinner séance would be more entertaining than bridge. Then Cicely disappears!

Meet Jen Dawson, mystery writer, coffee lover, and amateur detective? Crime writer Jen returns to her small hometown with a bestselling book behind her and a bad case of writer’s block. Finding sanctuary in the local bookstore, with an endless supply of coffee, Jen waits impatiently for inspiration to strike. But when the owner of the bookstore dies suddenly in mysterious circumstances, Jen has a real-life murder to solve. The stakes are suddenly higher when evidence places Jen at the scene of the crime and the reading of the will names her as the new owner of the bookstore.

As a Deacon at St. Lawrence parish, Katerina Rowe enjoys a quiet life in the village of Eyam. But everything changes when she discovers the body of a man and a badly beaten woman in the alleyway behind her husband’s pharmacy. Kat is immediately drawn to Beth, the young woman she saved. But in order to keep her safe, Kat finds herself embroiled in a baffling mystery.

Iris Woodmore is a journalist with a hot new story. For the first time in history, two women compete in a by-election to become the third woman elected to Parliament. Iris accompanies one of the candidates to a debate in the House of Commons. But it's a place that holds painful memories. In 1914, Iris' mother died there when she fell into the River Thames during a daring suffragette protest. In the shadow of Big Ben, a waterman tells Iris her mother didn't fall - she jumped.

When a failed entrepreneur is temporarily left in charge of his aunt's huge gothic home, he knows he must be able to make a profit from it somehow. Murder, he decides, is the only way to do it. For Madingley Grange is the perfect venue for a 1930s murder-mystery weekend, and Simon Hannaford – with the reluctant help of his long-suffering sister – soon hatches a plan for money-spinning mayhem. From the conservatory to the claret cellar, the clues are carefully sprinkled. But when the guests arrive, it is obvious that the game won't be going as planned.

When George Abbershaw is invited to Black Dudley Manor for the weekend, he has only one thing on his mind - proposing to Meggie Oliphant. Unfortunately for George, things don't quite go according to plan. A harmless game turns decidedly deadly and suspicions of murder take precedence over matrimony. Trapped in a remote country house with a murderer, George can see no way out. But Albert Campion can.

London, 1922. Between gallivanting in his Rolls-Royce and darkening the doorways of London's hotspots, Lord Reginald "Rex" Bankes-Fernsby has almost succeeded in banishing the battlefield nightmares that plague his sleep. Pity he can't say the same about that nagging lack of direction in his life. If only he were like his best friend Freddie—self-assured, suave, and up to his ears in secrets. But when Freddie is murdered, Rex doubts the verdict. Was Freddie really cut down while up to no good, or was he killed in the line of duty?

Cairo. December 1917. Following a tip-off from notorious spy Fredrick Fredricks, Fiona Figg and Kitty Lane of British Intelligence find themselves in the hustle and bustle of Egypt. But ancient mummies aren’t the only bodies buried in the tombs of Cairo. When a young French archeologist is found dead in a tomb in the desert with his head bashed in, and an undercover British agent goes missing, the threat moves closer to home. As they dig deeper, soon Fiona and Kitty uncover a treasure trove of suspects, including competing excavators, jealous husbands, secret lovers, and belligerent spies.

Lord Alexander Pyne-ffoulkes, the younger son of the Duke of Ilvar, holds a bitter grudge against his wealthy father. The Duke intends to give his Duchess a priceless diamond parure on their wedding anniversary - so Alec hires a pair of jewel thieves to steal it. The Duke's remote castle is a difficult target, and Alec needs a way to get the thieves in. Soldier-turned-criminal Jerry Crozier has the answer: He'll pose as a Society gentleman and become Alec's new best friend.

Amory Ames is a wealthy young woman who questions her marriage to her notoriously charming playboy husband Milo. Looking for a change, she accepts a request for help from her former fiance, Gil Trent. Amory accompanies Gil to the luxurious Brightwell Hotel in an attempt to circumvent the marriage of his sister Emmeline to Rupert Howe, a disreputable ladies' man. Amory sees in the situation a grim reflection of her own floundering marriage.

When a maid in the upper class Ellison household is strangled, Inspector Pitt is called in to investigate. He finds a world ruled by strict manners and social customs, where the inhabitants of the Ellison's neighborhood appear to be more outraged by the thought of scandal than they are by murder. Inspector Pitt finds a most unlikely ally in Charlotte, the Ellison's spirited daughter. But as the murders continue, Charlotte and Pitt find themselves drawn together by more than the investigation.

When Nigel Baxter, a middle-aged married banker with an unremarkable past, is found dead in the bath of a plush hotel suite, his wrists slit, it looks as if he's taken his own life. At first. But when Detective Inspector Daniel Riley is assigned to the case, he soon realises all isn't as it first appears to be. When a postmortem shows Baxter was poisoned, Riley suspects foul play. And then there's the odd addition of a teddy bear left at the crime scene....

A new killer is stalking the streets of London’s East End. Though newspapers have dubbed him 'the Torso Killer’, this murderer’s work is overshadowed by the hysteria surrounding Jack the Ripper’s Whitechapel crimes. The victims are women too, but their dismembered bodies, wrapped in rags and tied up with string, are pulled out of the Thames - and the heads are missing….

Not only is Scarlett Parker's love life in the loo - as her British cousin Vivian Tremont would say - it's also gone viral with an embarrassing video. So when Viv suggests Scarlett leave Florida to lay low in London, she hops on the next plane across the pond. Viv is the proprietor of Mims's Whims, a ladies' hat shop on Portobello Road bequeathed to both cousins by their beloved grandmother, and she wants Scarlett to finally join her in the millinery business. But a few surprises await Scarlett in London.

The new season is starting and the Master of Ceremonies is missing. Max, an Arbiter of the Split Worlds Treaty, is assigned with the task of finding him - with no one to help but a dislocated soul and a mad sorcerer. There is a witness, but his memories have been bound by magical chains only the enemy can break. A rebellious woman trying to escape her family may prove to be the ally Max needs. But can she be trusted? And why does she want to give up eternal youth and the life of privilege she’s been born into?

Duchlan Castle is a gloomy place in the Scottish Highlands. Late one night the body of Mary Gregor, sister of the laird, is found in the castle. She has been stabbed to death in her locked bedroom. The only tiny clue to the culprit is a silver fish's scale, left on the floor next to Mary's body. Inspector Dundas is dispatched to investigate. The Gregor family and their servants are quick to explain that Mary was a kind and charitable woman, but Dundas uncovers a more complex truth.

Lane Noble Graham stands accused of murdering her ex-husband. The one man who can help, Johnny Mack Cahill, vowed never to return to the town that scorned him - or the woman whose love he knew he didn't deserve. From the rusted-out trailers on the wrong side of the river to the stately pillared mansions along Magnolia Avenue, everybody has something to hide - but one secret could make Lane and Johnny Mack the next targets of a twisted killer who's struck once and is bent on striking again....

Mrs. Laetitia Rodd, aged 52, is the widow of an archdeacon who makes her living as a highly discreet private investigator. Her brother, Frederick Tyson, is a criminal barrister living in nearby Highgate with his wife and 10 children. Frederick finds the cases, and Laetitia solves them using her arch intelligence and her immaculate cover as an unsuspecting widow. When a case arises involving the son of the highly connected Sir James Calderstone, Laetitia sets off for Lincolnshire undercover as the family's new governess.

Olivia Moreland prides herself on discrediting charlatans, particularly the false mediums that flock to London. But when Lord Stephen St. Leger requests her help in investigating an alleged psychic's claims, she can't deny the ominous feeling she has within the walls of his ancient estate - or the intimately familiar connection she has with Stephen himself. The last time he'd called Blackhope Hall home, Stephen had watched as his elder brother claimed both the family title and the woman he loved.

For Emily, accepting the proposal of Philip, the viscount Ashton, was an easy way to escape her overbearing mother, who was set on a grand society match. So when Emily's dashing husband died on safari soon after their wedding, she felt little grief. After all, she barely knew him. Now, nearly two years later, she discovers that Philip was a far different man from the one she had married so cavalierly.

Devlin Markham, the notorious "Devil Duke" of Huntington, needs a woman. And not just any woman. If he can't woo one of the most eccentric bluestockings of the Ton within the month, he can kiss his hard-earned fortune good-bye. But he's always thought love a wasted emotion and marriage an inconvenience at best. And oddly enough, Lady Sophie Wolcott seems unmoved by his charm. When Sophie learns her beloved orphanage is in imminent danger, she will do anything to save it. Even marry a ruthless rake who takes what he wants in business and pleasure.

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.

Maurice Leblanc, a writer of detective fiction during the same period as Sir Arthur Conan Doyle, created Arsene Lupin, a sort of French Robin Hood. An inventive genius, a master of disguise, and an accomplished actor, Lupin operates in the choice chateaux and salons. He scorns sham and with great disdain leaves his card in a baron's residence. The card reads, "Arsene Lupin, gentleman-burglar, will return when the furniture is genuine."