In 1868, teenaged Sherlock Holmes discovers that his American tutor is hunting a notorious killer who was supposedly killed by the United States government, but who is apparently alive and well in Surrey, England.
In 1868, with his army officer father suddenly posted to India, and his mother mysteriously "unwell," fourteen-year-old Sherlock Holmes is sent to stay with his eccentric uncle and aunt in their vast house in Hampshire, where he uncovers his first murder and a diabolical villain.
A community of mice and a cheese-loving cat form an unlikely alliance at London's Cheshire Cheese, an inn where Charles Dickens finds inspiration and Queen Victoria makes an unexpected appearance.
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.
As the widowed master of an elegant house in Victorian-era London slips slowly into madness and his tyrannical housekeeper takes on more power, a ghostly presence distracts a teenaged maidservant with clues to a deadly secret.
Mary Quinn is assigned to the Queen's case and sets out to identify a petty thief at work in Buckingham Palace and finds herself fending off the advances of a feckless prince, but a larger scandal looms when the prince witnesses the murder of a friend in an opium den.
In Victorian London, after his life is saved by a young physician, a thief utilizes the knowledge he gains in prison and from the scientific lectures he attends as the physician's case study exhibit to create a new, highly successful, double life for himself.
In 1868, teenaged Sherlock Holmes faces danger in a train station for the dead, a museum of curiousities, and downtown Moscow as he helps his brother, Mycroft, who has been framed for murder.
"A fourth action-filled puzzler for teen Sherlock as he plunges into a fight for his life and battles to discover what has happened to his missing friends"--Provided by publisher.
After twenty years as a gentleman, Montmorency is glad to be free of Scarper, his wretched alter-ego, but when a young friend is caught in the middle of a murderous political plot, Montmorency may have no choice but to call upon Scarper for help.