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.

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.

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.

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.

England, 1920. Eleanor Swift has spent the last few years travelling the world: taking tea in China, tasting alligators in Peru, escaping bandits in Persia and she has just arrived in England after a chaotic 45-day flight from South Africa. Chipstone is about the sleepiest town you could have the misfortune to meet. But then, from the edge of a quarry, through the driving rain, Eleanor is shocked to see a man shot and killed in the distance. Before she can climb down to the spot, the villain is gone and the body has vanished.

Frances Wynn, the American-born Countess of Harleigh, enjoys more freedom as a widow than she did as a wife. After an obligatory year spent mourning her philandering husband, Reggie, she puts aside her drab black gowns, leaving the countryside and her money-grubbing in-laws behind. With her young daughter in tow, Frances rents a home in Belgravia and prepares to welcome her sister, Lily, arriving from New York - for her first London season.

Dimpson McCabe - Dimpsie - has invited his closest friends of the theatre world to join him for Christmas at his castle on a private island some hours' drive from Edinburgh. The festivities have barely begun when Dimpsie is found draped atop the Christmas tree, electrocuted by the lights. It's labelled Accidental Death, but in the swirling snow suspicion is dancing among the flakes. The dogged Inspector Smith begins to circle, seeking to find the leading man or prima donna responsible.

The newly formed Ministry of Fine Arts has a staffing problem - one minister dead within six months of its inception, his successor snuffed out shortly before the General Election. When a third victim, Permanent Secretary Edwin Pompfret is fatally crushed by the fall of a giant bust, Inspector Julian Rivers is drawn into a case of murder of artistic devilment.

Amelia Amesbury—widow, mother, and countess—has a secret. Amelia writes for a London penny paper, doling out advice on fashion, relationships, and manners under the pen name Lady Agony. But when a lady’s maid writes Amelia to ask for advice when she believes her mistress has been murdered—and then ends up a victim herself—Amelia is determined to solve the case.

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...

Minnie Harper isn't used to putting herself first. Not after she moved away from England only to be left raising two children alone on the Greek Island of Corfu following her husband's unexpected death. But with her daughter begging to be sent to school abroad and her son grasping at his own independence, Minnie realizes she must prepare for the next stage of her life.

Swordsman Richard Hughes has arrived on the banks of the Grand Canal looking for a simpler life, only to be plunged—alongside Phillip de Chambray, a remarkable woman unable to show her true self—into the thick of the murkiest, most dangerous European politics, at a moment when someone is trying to destroy the opera, and Venice itself.

1939, Los Angeles. Evelyn Galloway can't believe her luck! On her first day in LA, she lands her dream job of script supervisor, and on the hottest film in town—Hitchcock's adaptation of Rebecca. But her good fortune quickly changes when a legendary actor cancels their lunch the following day and is found murdered at home. Evelyn realizes she could be a witness to the crime, having passed the bungalow's grounds on her way home the night before. Who was the man looking upset in a gazebo? And why was movie starlet Madeleine Nabors running wildly away from the scene?

Darkness comes to Sidmouth, when, unable to cope after a devastating tragedy, late-night radio talk show host Edward Temmis is let go from his beloved job. Cast adrift, his outlook is bleak – until he meets Stevie, whose grandmother, a devoted listener, died in a suspicious fire last year. Well, nobody hurts his listeners and helping Stevie might just give him the purpose he needs. When their investigation stalls, they enlist local estate agent Kim, with whom Edward had a doomed fling last year. Working together, they discover Stevie’s grandmother wasn’t the only one of his listeners targeted.

After losing her job at an exclusive London hotel, Penny Slipper is only too happy to help when her grandma asks her to take charge at the Cozy Craft sewing shop in charming rural Suffolk. With cousin Izzy on hand as the expert dressmaker and Penny’s head for business, what can possibly go wrong? But Penny’s in town for less than a day when the local librarian is poisoned and Penny fears she might even be accidentally responsible. Penny and Izzy are forced to turn detectives to uncover the true cause of death, while finishing a costume commission for their first customer.

Edinburgh, 1948. Welfare Officer Helen Crowther has enough on her plate between her hectic job, her complicated love life, and her growing reputation as a troublemaker. Last year's scandal did nothing to help with the disapproval she already gets as a woman in her line of work. All she wants now is to focus on doing what she loves: helping the poor of the Fountainbridge ward in the city of Edinburgh. The last thing she needs is another string of murders to distract her . . .

December 1922, and society dressmaker Jemima Flowerday receives a letter from Lady Hamlash of Merry Beggars Hall, requesting three new gowns for the Christmas season. Lady Hamlash does not travel, so Jemima will need to visit the Hall in deepest Suffolk to work in situ. The commission appeals to Jemima for more than one reason. It will bring her some much-needed income. More interestingly, the remote manor house was the scene of a grisly murder earlier that year, when Lady Hamlash, inspecting her plants in the walled garden, found a man's severed head beneath a terracotta asparagus cloche.

London, 1941: Miss Jane Treen is at her desk, strong black coffee in hand and fluffy ginger cat by her side, when her top-secret government work is interrupted by an urgent call to Devon. A woman has been found dead in a lake in a place where she shouldn’t have been. Jane needs to gather the clues and find the killer before someone else from the agency gets hurt… Shy and handsome code-breaker Arthur Cilento is bewildered by the arrival of the efficient Miss Treen and her cat Marmaduke.

As Allied bombs rain down on Torino in the autumn of 1942, Stella Costa’s mother sends her to safety with distant relatives in a Tuscan villa. There, Stella finds her family tasked with a great responsibility: hiding nearly 300 priceless masterpieces from Florence, including Botticelli’s famous Primavera. With the arrival of German troops imminent, Stella finds herself a stranger in her family’s villa and she struggles to understand why her aunt doesn’t like her. She knows it has something to do with her parents.

When the invitation to attend the press opening of a luxury Swiss hotel—owned by reclusive billionaire Marcus Leidmann—arrives, it’s like the answer to a prayer. Three years after the birth of her youngest child, Lo Blacklock is ready to reestablish her journalism career, but post-pandemic travel journalism is a very different landscape from the one she left ten years ago.