A gothic murder mystery set in gritty Victorian-era London, where an intrepid society girl finds herself embroiled in the investigation of a serial killer known as Jack the Ripper.

Rescued from the gallows in 1850s London, young orphan and thief Mary Quinn is offered a place at Miss Scrimshaw's Academy for Girls where she is trained to be part of an all-female investigative unit called The Agency and, at age seventeen, she infiltrates a rich merchant's home in hopes of tracing his missing cargo ships.

A very small mouse of unknown origins runs away from school in the Royal Mews of Buckingham Palace shortly before the celebration of Queen Victoria's diamond jubilee, celebrating her sixty years on the British throne.

Horton, an upstanding kitchen boy in a castle in nineteenth-century England, becomes embroiled in a mystery surrounding a series of thefts, which is also connected to the pursuit of a very eligible and wealthy young lady's affections.

As a nearly full-fledged member of the Agency, the all-female detective unit based in Miss Scrimshaw's Academy for Girls, Mary Quinn, disguised as a poor apprentice builder, must brave the sinister underworld of Victorian London in order to unmask a murderer.

In late nineteenth-century London, fourteen-year-old Enola Holmes, much younger sister of detective Sherlock Holmes, turns to Florence Nightingale for help when her investigation into the disappearance of a Crimean War widow grows cold.

Junior sleuth Maisie Hitchins, who lives in her grandmother's boarding house in Victorian London, uncovers an intriguing plot involving stolen sausages, pilfered halfpennies, and a fast-paced bicycle chase.

"Queen Victoria has a problem: there's a petty thief at work in Buckingham Palace. Charged with discretion, the Agency assigns quick-witted Mary Quinn to the case. Posing as a domestic in the royal household and fending off the attentions of a feckless Prince of Wales are challenge enough, but when the prince witnesses a murder in an opium den -- and scandal threatens the royal family -- Mary learns that the accused killer may be someone very close...

"Seven very proper Victorian young ladies conspire to hide a murder from the authorities at their boarding school"--

"Enola Holmes, the much younger sister of Sherlock, is now living independently in London and working as a scientific perditorian (a finder of persons and things). But that is not the normal lot of young women in Victorian England. They are under the near absolute control of their nearest male relative until adulthood. Such is the case of Enola's friend, Lady Cecily Alastair. Twice before Enola has rescued Lady Cecily from unpleasant designs of her...