May 1912. After the previous year’s deadly heatwave, it’s been an uneventful spring in Littleton Cotterell. Though for Lady Hardcastle and her fiercely loyal lady’s maid Flo, at least there are the provincial delights of the village’s inaugural art exhibition—and bicycle race—to look forward to. But at the exhibition opening, there’s a panicked shout of ‘Fire!’ In the confusion, the main attraction—an extremely expensive book—is stolen from under everyone’s nose, as is a valuable painting lent by Sir Hector Farley-Stroud. Then the race, which starts as a charming day out, ends in a shocking death. And to top it all off, the Farley-Strouds reveal they’re in debt and might lose their house. The sleuthing duo soon find themselves torn between a murder investigation, an art theft mystery, and trying to help their pals. All with a suspicious figure from Flo’s past, a supercilious insurance investigator, and a pair of rather bizarre treasure hunters on the loose…

November 1911. Lady Emily Hardcastle is celebrating her birthday by seeing a play at the Duke's Theatre in Bristol with her maid and confidante, the inimitable Flo. Act One is a triumph. Then Act Two opens with a body on stage-a real one. One of the cast has been brutally murdered during the interval. When other matters get in the way of Inspector Sunderland overseeing the case himself, he asks the ever-resourceful Lady H to keep a watchful eye on the suspects-and his police colleagues. Rustling up some cunning disguises of their own, she and Flo are soon in deep cover among the cast and crew, pulling back the curtain on some shocking secrets and rivalries... The problem is, everyone seems to have a motive, and everyone seems to have an alibi...In this locked-room mystery in which nothing is as it seems, the amateur sleuths need to put on the performances of their lives if they're to stand a chance of shining a spotlight on the truth...

Summer 1911. A scorching heatwave engulfs the quiet town of Littleton Cotterell and brings about an unusually early harvest. The villagers are thrilled, but events quickly turn sour when one of them turns up dead in an apple orchard, stabbed through the heart. Amateur sleuth Lady Hardcastle and her trusty lady's maid, Flo, suddenly have a juicy case on their hands. Might the mysterious stranger they recently met in the village be to blame? When a second cider-related murder takes place, it quickly becomes clear that there's more to these mysterious deaths than meets the eye. The daring duo uncover whispers of an ancient order and moonlit rituals. And evidence points to a macabre secret in the village stretching back years. A secret someone will do anything-anything at all-to keep hidden. Something is rotten, that's for sure. With the local constabulary baffled, Lady Hardcastle and Flo must use all their powers of wit and whimsy to get to the bottom of the dastardly deed. But can they catch the killer before any more people drop dead?

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. In between strolls to the Dog & Duck and planning for the annual village show, the daring duo dust off the Crime Board and go undercover at Bristol Aviation. With international powers investing heavily in aeronautics, the stakes are high-sky high-and the suspects soon mount up. Can Lady Hardcastle find the culprit before someone else falls down dead?

A locked room. A mysterious death. Just another gig for the Dizzy Heights. When London's finest jazz musicians, the Dizzy Heights, are booked to play the glitzy Midsummer Ball at a country house in Oxfordshire, they expect a weekend filled with flappers and toffs having a roaring good time. But the festivities at Bilverton House take a turn for the worse when the group are stranded by a summer storm. And when a member of the Bilverton family turns up dead in a locked room in an apparent suicide, Skins, Dunn and Ellie realise this is going to be a much tougher gig than they thought. But here's the lick. What if it was in fact cold-blooded murder? And what if the killer is still at large? It's up to the Dizzy Heights to once again put down their instruments and get improvising if they want to solve this confounding mystery.

Late October 1909, and the season of ghouls and things that go bump in the night has descended on the village of Littleton Cotterell. Lady Hardcastle and her trusted lady's maid, Florence, find themselves hosting a colourful cast of actors whose spooky moving picture, The Witch's Downfall, is being shown to mark Halloween. But things take a macabre turn when the first night's screening ends with a mysterious murder, and the second night with another...One by one the actors turn up dead in ways that eerily echo their film. With the police left scratching their heads, Lady Hardcastle calls upon her amateur sleuthing skills to launch an investigation, with Flo's able assistance. Surrounded by suspects both human and supernatural, Lady Hardcastle must use a little trickery of her own to unmask the murderer.

Spring, 1909, and Lady Hardcastle, amateur sleuth and all-round eccentric, is enjoying a well-deserved rest. But a week after a trip to the cattle market, Spencer Caradine, a local farmer, turns up dead in the pub, face-down in his beef and mushroom pie. Once again, it is up to Lady Hardcastle and her maid, Florence, to solve the case. Armed with wit and whimsy, not to mention Florence's mean right hook, the pair set out to discover what really happened and why. Was it poison or just ill luck? As they delve further into their investigation, they encounter a theft where nothing is stolen, a seance with a troubled ghost and an ever-increasing number of Spencer's family and friends who might just have motive for murder. One thing's for sure: Lady Hardcastle has a mystery on her hands.

Missing diamonds. Mysterious deaths. And all that jazz. London, 1925. With their band the Dizzy Heights, jazz musicians Ivor 'Skins' Maloney and Bartholomew 'Barty' Dunn are used to improvising as they play the Charleston for flappers and toffs, but things are about to take a surprising turn. Superintendent Sunderland has had word that a deserter who stole a fortune in diamonds as he fled the war is a member of the Aristippus private members' club in Mayfair-where the Dizzy Heights have a residency. And the thief is planning to steal a hoard of jewels hidden there under the cover of a dance contest. As mutual pal Lady Hardcastle has suggested, Skins and Dunn are perfectly placed to be Sunderland's eyes and ears-and Skins's wife Ellie soon lends a hand with a bit of light snooping. But the stakes change dramatically when a mysterious death at the club brings a sinister note to the investigation. With the dance contest fast approaching, the trio must solve the mystery of the missing diamonds, unmask the murderer, and prevent more deadly crimes-all without missing a beat.

July 1910. Lady Hardcastle and her tireless sidekick Flo have finally embarked on a long-overdue seaside break. But just as they're wavering between ice creams and donkey rides, their fellow guests start to go missing-and the duo find themselves with a hysterical hotel manager and a case to solve. The first to disappear is Dr Goddard, a scientist doing something terribly top-secret for the government. Gone too are his strongbox and its mysterious contents. By the time Lady Hardcastle has questioned the horde of international guests, her number-one suspect has been dispatched in grisly circumstances-and then the others start vanishing too. As the case begins to look like a matter of national security, Lady Hardcastle takes advice from her brother in the secret service. But could there be an even more personal connection at play? To solve the case, Lady Hardcastle may face a shocking discovery of her own.