Fresh from a six-month sojourn in Italy, Lady Julia returns home to Sussex to find her father's estate crowded with family and friends: but dark deeds are afoot at the deconsecrated abbey, and a murderer roams the ancient cloisters.

In Grimsgrave Hall, enigmatic Nicholas Brisbane has inherited a ruined estate, replete with uncanny tenants and one unwanted houseguest: Lady Julia Grey. Despite his admonitions to stay away, Lady Julia arrives in Yorkshire to find Brisbane as remote and maddeningly attractive as ever. Cloistered together, they share the moldering house with the proud but impoverished remnants of an ancient family: the sort that keeps their bloodline pure and their secrets close.

Lady Julia Grey travels through India, accompanied by her sister, Portia, her brother, Plum, and occasionally her husband - Brisbane. Along the way, Portia becomes convinced of a murder, and all four are pulled into the dark underbelly of 19th-century India....

Brisbane has taken charge of the music. Julia has, perhaps mistakenly, allowed her sisters to choose the dress. And Belmont Abbey is overflowing with guests awaiting the blessed day. What could go wrong? Combine the close-knit chaos of village life, pagan traditions bursting through staid Victorian conventions, and the congenial madness that tends to swirl around Lady Julia's family and you get an unforgettable wedding.

Partners now in marriage and in trade, Lady Julia and Nicholas Brisbane have finally returned from abroad to set up housekeeping in London. But merging their respective collections of gadgets, pets, and servants leaves little room for the harried newlyweds themselves, let alone Brisbane's private enquiry business. Among the more unlikely clients: Julia's very proper brother, Lord Bellmont, who swears Brisbane to secrecy about his case.

It's the autumn of 1890, and almost a year has passed since - much to their surprise - Lady Julia and Nicholas became parents. Just as the couple begins to adapt, a solicitor arrives with a strange bequest. Nicholas, it seems, has inherited a country house - but only if he and his family are in residence from All Hallows' Eve through Bonfire Night.

To mark the passing of another decade, the esteemed - and eccentric - March family have assembled at Bellmont Abbey to perform the Twelfth Night Revels for their sleepy English village. But before Lady Julia and her handsome, sleuthing husband, Nicolas Brisbane, can take to the stage, a ruckus in the stable yard demands their attention. An abandoned infant is found nestled in the steel helm of St. George.

January 1889. As the newest member of the Curiosity Club - an elite society of brilliant, intrepid women - Veronica Speedwell is excited to put her many skills to good use. As she assembles a memorial exhibition for pioneering mountain climber Alice Baker-Greene, Veronica discovers evidence that the recent death was not a tragic climbing accident but murder.

Autumn 1888. Veronica Speedwell and her colleague Stoker are asked by Lady Wellingtonia Beauclerk to stop a potential scandal so explosive it threatens to rock the monarchy. Prince Albert Victor is a regular visitor to the most exclusive private club in London, and the proprietress, Madame Aurore, has received an expensive gift that can be traced back to the prince. Lady Wellie would like Veronica and Stoker to retrieve it from the club before scandal can break.

London, 1889. Veronica Speedwell and her natural historian beau Stoker are summoned by Sir Hugo Montgomerie, head of Special Branch. He has a personal request on behalf of his goddaughter, Euphemia Hathaway. After years of traveling the world, her eldest brother, Jonathan, heir to Hathaway Hall, was believed to have been killed in the catastrophic eruption of Krakatoa a few years before. But now a man matching Jonathan’s description and carrying his possessions has arrived at Hathaway Hall with no memory of his identity or where he has been.

London, 1888. As colorful and unfettered as the butterflies she collects, Victorian adventuress Veronica Speedwell can't resist the allure of an exotic mystery - particularly one involving her enigmatic colleague, Stoker. His former expedition partner has vanished from an archaeological dig with a priceless diadem unearthed from the newly discovered tomb of an Egyptian princess. This disappearance is just the latest in a string of unfortunate events that have plagued the controversial expedition, and rumors abound that the curse of the vengeful princess has been unleashed as the shadowy figure of Anubis himself stalks the streets of London.

Victorian adventuress and butterfly hunter Veronica Speedwell receives an invitation to visit the Curiosity Club, a ladies-only establishment for daring and intrepid women. There she meets the mysterious Lady Sundridge, who begs her to take on an impossible task - saving society art patron Miles Ramsforth from execution. Accused of the brutal murder of his artist mistress Artemisia, Ramsforth will face the hangman's noose in a week's time if Veronica cannot find the real killer. But Lady Sundridge is not all that she seems.

As the city prepares to celebrate Queen Victoria's golden jubilee, Veronica Speedwell is marking a milestone of her own. After burying her spinster aunt, the orphaned Veronica is free to resume her world travels in pursuit of scientific inquiry - and the occasional romantic dalliance. As familiar with hunting butterflies as she is fending off admirers, Veronica wields her butterfly net and a hatpin with equal aplomb, and with her last connection to England gone, she intends to embark upon the journey of a lifetime.

Semi-retired private detective Molly Murphy Sullivan is suffering from depression after a miscarriage following her adventure in San Francisco during the earthquake of 1906. She and her husband, Daniel, are invited for Christmas at a mansion on the Hudson, and they gratefully accept, expecting a peaceful and relaxing holiday season. Not long after they arrive, however, they start to feel the tension in the house's atmosphere.

City girl Poppy desperately wants to pay off her debts, quit her dead-end job, find her father...oh, and keep a plant alive. But she knows that these are just hopeless dreams - until the day a letter arrives. Suddenly, Poppy is on a train heading deep into the English countryside to claim a mysterious inheritance. And the last thing she expects to receive is a cottage garden nursery - complete with romantic climbing roses, scented herbs, a bossy, talkative ginger cat...and a dead body.