Victorian adventuress Veronica Speedwell is whisked off to a remote island off the tip of Cornwall when her natural historian colleague Stoker's brother calls in a favor. On the pretext of wanting a companion to accompany him to Lord Malcolm Romilly's house party, Tiberius persuades Veronica to pose as his fiancée. But upon arriving, it becomes clear that the party is not as innocent as it had seemed. Every invited guest has a connection to Romilly's wife, Rosamund, who disappeared on her wedding day three years ago, and a dramatic dinner proves she is very much on her husband's mind.

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.

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.

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.

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....

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.

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.

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.

After a year of marriage - and numerous adventures - Lady Julia and Brisbane hope for a quiet, intimate Christmas together - until they find themselves at her father's ancestral estate, Bellmont Abbey, with her eccentric family and a menagerie of animals. Nevertheless, Julia looks forward to a lively family gathering - but amongst the celebrations, a mystery stirs. There are missing jewels, new faces at the Abbey, and a prowling ghost that brings back unwelcome memories from a previous holiday - one that turned deadly. Is a new culprit recreating crimes of the past? And will Brisbane let Julia investigate?

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.

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.

Inspector Treadles, Charlotte Holmes’ friend and collaborator, has been found locked in a room with two dead men, both of whom worked with his wife at the great manufacturing enterprise she has recently inherited. Rumors fly. Had Inspector Treadles killed the men because they had opposed his wife’s initiatives at every turn? Had he killed in a fit of jealous rage because he suspected Mrs. Treadles of harboring deeper feelings for one of the men? To make matters worse, he refuses to speak on his own behalf, despite the overwhelming evidence against him. 

As "Sherlock Holmes, consulting detective," Charlotte Holmes has solved murders and found missing individuals. But she has never stolen a priceless artwork - or rather, made away with the secrets hidden behind a much-coveted canvas. But Mrs. Watson is desperate to help her old friend recover those secrets and Charlotte finds herself involved in a fever-paced scheme to infiltrate a glamorous Yuletide ball where the painting is one handshake away from being sold and the secrets a bare breath from exposure.

It's June 1814, and the royal families of Austria, Russia, and the German states have gathered in London at the Prince Regent's invitation to celebrate the defeat of Napoleon and the restoration of monarchical control throughout Europe. But the festive atmosphere is marred one warm summer evening by the brutal murder of a disgraced British nobleman long thought dead.