When Lady Cordelia, a brilliant mathematician, and her brother, Lord Woodbridge, disappear from London, rumors swirl concerning fraudulent bank loans and a secret consortium engaged in an illicit - and highly profitable - trading scheme that threatens the entire British economy. The incriminating evidence mounts, but for Charlotte and Wrexford, it's a question of loyalty and friendship. And so they begin a new investigation to clear the siblings' names, uncover their whereabouts, and unravel the truth behind the whispers.

When the body of a young woman is found near the ruins of a haunted abbey, everyone assumes she died of fright. A postmortem examination tells a different story. Not only was Elizabeth Barrett poisoned, but the lethal dose of cyanide must have been administered by someone close to her - someone she trusted, who may have known her secret. As Captain Redmond and Constable Haze delve into the victim's seemingly ordinary life, they learn she wasn't the proper, biddable wife everyone believed her to be. 

When young cook Kat Holloway learns that the children of London's Foundling Hospital are mysteriously disappearing and one of their nurses has been murdered, she can't turn away. She enlists the help of her charming and enigmatic confidant Daniel McAdam, who has ties to Scotland Yard, and Errol Fielding, a disreputable man from Daniel’s troubled past, to bring the killer to justice. Their investigation takes them from the grandeur of Mayfair to the slums of the East End, during which Kat learns more about Daniel and his circumstances than she ever could have imagined. 

Felicity Carrol would rather be doing just about anything other than attending balls or seeking a husband. What she really wants to do is continue her work using the latest forensic methods and her photographic memory to help London police bring murderers to justice. So when her friend Scotland Yard Inspector Jackson Davies, weak from injury, discovers a murder in a wild mining town in Montana that echoes the terrible crimes in England, Felicity decides to go herself.

In return for a random act of kindness, scholar Li Bai Chang presents young cook Kat Holloway with a rare and precious gift - a box of tea. Kat thinks no more of her unusual visitor until two days later when the kitchen erupts with the news that Lady Cynthia's next-door neighbor has been murdered.

When Kat's employer asks for help in clearing her friend's name, Kat trades her kitchen for the homes of Mayfair's wealthiest families. Soon antiquities are disappearing not only from the extravagant households of connoisseurs and collectors but also from the illustrious British Museum. As the thefts increase in frequency, Kat calls upon her friend Daniel McAdam, who has already set himself up in a pawnshop on the Strand as a seedy receiver of stolen goods. When a man is murdered in the shop, Kat must use all of her wits to see that the thieves are caught and justice is done. 

Life’s always an adventure for the Athena Club...especially when one of their own has been kidnapped! After their thrilling European escapades rescuing Lucina van Helsing, Mary Jekyll, and her friends return home to discover that their friend and kitchen maid Alice has vanished - and so has their friend and employer Sherlock Holmes! As they race to find Alice and bring her home safely, they discover that Alice and Sherlock’s kidnapping are only one small part of a plot that threatens Queen Victoria, and the very future of the British Empire.

The year is 1924. Only a few years removed from the trenches of Flanders, Lieutenant Eric Peterkin has just been granted membership in the most prestigious soldiers-only club in London: the Britannia. But when a gentleman's wager ends with a member stabbed to death, the victim's last words echo in the lieutenant's head: that he would "Soon right a great wrong from the past".  Eric is certain one of his fellow members is the murderer. But who?

The Earl of Wrexford possesses a brilliant scientific mind, but boredom and pride lead him to reckless behavior. He does not suffer fools gladly. So when pompous, pious Reverend Josiah Holworthy publicly condemns him for debauchery, Wrexford unsheathes his rapier-sharp wit and strikes back. As their war of words escalates, London's most popular satirical cartoonist, A. J. Quill, skewers them both.

When Lord Wrexford discovers the body of a gifted inventor in a dark London alley, he promptly alerts the watchman and lets the authorities handle the matter. But Wrexford soon finds himself drawn into the murder investigation when the inventor's widow begs for his assistance, claiming the crime was not a random robbery. It seems her husband's designs for a revolutionary steam-powered engine went missing the night of his death. The plans could be worth a fortune and very dangerous in the wrong hands.