1934. Accidental amateur sleuth Kitty Underhay is being escorted by ex-army captain Matthew Bryant on an errand of mercy, as she takes a basket of grapes to her nemesis Mrs. Craven, who is recuperating from a recent operation. But their arrival at Elm House Nursing Home coincides with the mysterious death of Lady Wellings, a long-term resident.

Katherine, her loyal maid Harriet, and her tenacious pug Emma soon find themselves knee-deep in troubled waters as they try to piece together the baffling clues to reveal the truth. To further complicate matters, Katherine's investigation is impeded by the incompetent detective hired by the Marquess of Bath to flush out the burglar. Now Katherine must juggle advising Prudence on how "not" to land a duke, while she dives into the investigation in the hopes of narrowing down the suspects without making waves amongst the aristocracy.

Evelyn Christie has resigned herself to another long, boring weekend at Hessleham Hall, the home of her husband, Tommy's, family. However, it turns out to be anything but dull when his uncle, the Earl of Northmoor, is shockingly murdered! Evelyn must use all of her sleuthing knowledge, gained whilst she was a member of the Police force during the war, to find out who the murderer is before the bungling local police force decide the Earl was bumped off so Tommy could inherit his title.

When a tragic accident turns out to be murder, Lady Katherine finds herself embroiled in an investigation tainted by lies and deception. With conflicting witness testimony, mysterious neighbors who saw the impossible, and a secret someone would kill for, Katherine must dig into the dark side of London society to uncover the truth. Naturally, she has help. Maybe too much help. Along with her loyal maid, Harriet, her pilfering pug, Emma, and her Bow Street Runner friend Lyle, Katherine is joined by budding investigator Pru Burwick and her eccentric Scottish fiance, Lord Annandale.

Spring, 1921. Lady Eleanor Swift, explorer extraordinaire and accidental sleuth, hasn’t had a vacation since she arrived in England a year ago. So she books into the Grand Hotel in the fashionable resort of Brighton for some fresh air, fish and chips, and, of course, a dip in the ocean. Eleanor is enjoying her view of the waves and trying to find her bathing suit when calamity strikes: A guest has been found dead at her beautiful hotel. The distraught manager, who can’t afford a scandal, asks Eleanor to solve the case as swiftly as possible.

Winter, 1920. Amateur sleuth Lady Eleanor Swift is feeling festive. She is playing host to the entire village at Henley Hall. She’s also purchased perfect presents for each of her household - not forgetting the biggest bone in the butcher’s shop for her partner in crime, Gladstone the bulldog - and is looking forward to celebrating her first English country Christmas. As snowflakes fall, Eleanor is cheering on contestants in the traditional Christmas fun run in the grounds of the hall. But tragedy strikes when one of the runners drops dead at the finish line.

August 1911. Emily Hardcastle and her inimitable lady’s maid Florence Armstrong are enjoying a fine summer until Harry, Lady H’s brother, turns up out of the blue with a mystery for them to solve. A routine parachute test at a local aeroplane factory has gone horribly wrong - with pilot Dickie Dupree plummeting to his death. Harry is certain there is more to this ‘tragic accident’ than meets the eye, having discovered that someone at the airfield is leaking top secret intelligence to foreign rivals.

Summer 1933. Fresh from the discovery that she has family living nearby, Kitty Underhay has packed her carpet bag, commandeered a chambermaid and set off on a visit to stately Enderley Hall. She’s looking forward to getting to know her relatives, as well as the assembled group of house guests. But when elderly Nanny Thoms is found dead at the bottom of the stairs after papers of national importance are stolen, Kitty quickly learns that Muffy the dog’s muddy paws on her hemline are the least of her problems. 

November, 1923. Olive’s school chum Gigi invites Olive to London because Gigi’s dotty grandmother fears for her life - or so she’s said to Gigi. However, Olive is surprised to find that the dowager is far from muddled. The sharp and imperious matriarch refuses to admit to her worries and sends Olive on her way.

Autumn, 1920. Lady Eleanor Swift, accidental amateur detective and retired explorer, is determined to take a break from investigating murders. So when a local politician dies suddenly at an elegant dinner party at Farrington Manor, she tries her hardest not to listen to the raft of rumors around the village that he might have been poisoned by the fudge. It’s the anniversary of the disappearance of her beloved parents, and she’s promised herself not to get mixed up with any more mysteries. She isn’t sure they’d have approved.  

A snowbound country mansion, a missing butler, and a Christmas case...Olive and Jasper have never been closer - except for one thing. Jasper is still reticent about his frequent disappearances from polite society. With the holidays approaching and no paying client on the books, Olive decides to shadow Jasper when he’s unexpectedly called away. Her search brings her to Holly Hill Lodge where an eclectic group has gathered to celebrate an old-fashioned English Christmas. When the butler goes missing, Olive and Jasper must work together to solve the Christmas crime.

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.

England, 1920. Lady Eleanor Swift, adventurer extraordinaire and reluctant amateur detective, is taking a break from sleuthing. She’s got much bigger problems: Eleanor has two left feet, nothing to wear and she’s expected at the masked ball at the local manor. Her new beau Lance Langham is the host, so she needs to dazzle. Surrounded by partygoers with painted faces, pirates, priests and enough feathers to drown an ostrich, Eleanor searches for a familiar face. As she follows a familiar pair of long legs up a grand staircase, she’s sure she’s on Lance’s trail. 

Kate Palmer has relocated to Cornwall for a quiet life. Moving into picturesque Lavender Cottage with her sister, Angie, the little village of Lower Tinworthy should be the perfect place for their fresh new start. But within weeks of their arrival, there’s a death in the close-knit community.... A woman is found dead in the village hall, with her own kitchen knife next to the body, covered in blood. Kate, a practice nurse at the local medical center, begins to piece together the clues. 

A winter wedding. Venice, 1923. Posie Parker, London’s premier female private detective, is getting married. But on arrival in Venice, Posie finds she is walking into a nightmare. Her lodgings on the Grand Canal are consumed by fire, her famous fiancé is preoccupied, and most bizarrely of all, her hostess, the Countess Romagnoli, confesses she has a stalker and fears for her life.