1914. Joanna Blalock’s keen mind and incredible insight lead her to become a highly-skilled nurse, one of the few professions that allow her to use her finely-tuned brain. But when she and her ten-year-old son witness a man fall to his death, apparently by suicide, they are visited by the elderly Dr. John Watson and his charming, handsome son, Dr. John Watson Jr. Impressed by her forensic skills, they invite her to become the third member of their investigative team. Caught up in a Holmesian mystery that spans from hidden treasure to the Second Afghan War of 1878-1880, Joanna and her companions must devise an ingenious plan to catch a murderer in the act while dodging familiar culprits, Scotland Yard, and members of the British aristocracy. Unbeknownst to her, Joanna harbors a mystery of her own. The product of a one-time assignation between the now dead Sherlock Holmes and Irene Adler, the only woman to ever outwit the famous detective, Joanna has unwittingly inherited her parents’ deductive genius.

A continuation of USA TODAY bestselling author Leonard Goldberg's The Daughter of Sherlock Holmes, A Study in Treason is a new intriguing locked room mystery for Joanna and the Watsons to solve. The following case has not previously been disclosed to the public due to the sensitive information on foreign affairs. All those involved were previously bound by the Official Secrets Act. With the passage of time and the onset of the Great War, these impediments have been removed and the story can now be safely told. When an executed original of a secret treaty between England and France, known as the French Treaty, is stolen from the country estate of Lord Halifax, Scotland Yard asks Joanna, Dr. John Watson, Jr., and Dr. John Watson, Sr. to use their keen detective skills to participate in the hunt for the missing treaty. As the government becomes more restless to find the missing document and traditional investigative means fail to turn up the culprit, Joanna is forced to devise a clever plan to trap the thief and recover the missing treaty. Told from the point of view of Dr. John Watson, Jr. in a style similar to the original Sherlock Holmes stories, A Study in Treason is based partly on facts in our world and partly on the facts left to us by Sir Arthur Conan Doyle. Full of excitement and intrigue, this mystery is sure to be enjoyed by fans of Sherlock Holmes as well as the works of Laurie R. King and Charles Finch.

In the third book of this critically-acclaimed series, Sherlock Holmes' daughter faces a new unsolvable mystery with spies and a threat to the crown. Joanna and the Watsons receive an unexpected visitor to 221b Baker Street during a nocturnal storm. A rain-drenched Dr. Alexander Verner arrives with a most harrowing tale. Verner has just returned from an unsettling trip to see a patient who he believes is being held against his will. Joanna quickly realizes that Verner's patient is a high-ranking Englishman who the Germans have taken captive to pry vital information about England’s military strategies for the Great War. The man is revealed to be Alistair Ainsworth, a cryptographer involved in the highest level of national security. The police are frantic to find Ainsworth before the Germans can use him to decode all of England’s undeciphered messages. Ainsworth must be found at all costs and Joanna and the Watsons might be the only ones who can connect the clues to find him. USA Today bestselling author Leonard Goldberg returns with another puzzling case for the daughter of Sherlock Holmes to unravel in this exciting mystery sure to be enjoyed by fans of Sherlock Holmes.

"Suspenseful and entertaining, with many twists and turns....This is one of the best Sherlock Holmes series since Laurie R. King’s Mary Russell books."—Historical Novel Society USA Today bestselling author Leonard Goldberg returns with another puzzling case for the daughter of Sherlock Holmes to unravel in this exciting mystery, The Art of Deception, sure to be enjoyed by fans of Sherlock Holmes as well Laurie R. King and Charles Finch. In the west end of London, an apparently crazed individual is on the loose, breaking into art galleries and private homes to slash valuable paintings of women. Despite Scotland Yard’s best efforts, the criminal remains at large and continues on his destructive path. When Joanna and the Watsons are called in to solve the mystery, they soon discover that although the canvases have been slashed, their backings remain pristine, with no cuts or scratches. The criminal, it seems, is no mere vandal—he's searching for something hidden behind the portraits. Suspicion soon falls on two skilled art restorers who previously worked at the gallery where all the vandalized art was purchased. When Joanna finds the body of one in a bricked off fireplace at the gallery, the other is left as the prime suspect. But then he's discovered dead as well. Luckily, Joanna has a plan for ensnaring the criminal once and for all. But it must not fail, or more paintings—and lives—will be lost.

A continuation of USA Today bestselling author Leonard Goldberg's Daughter of Sherlock Holmes series, The Abduction of Pretty Penny finds Joanna and the Watsons on the tail of an infamous killer. Joanna and the Watsons are called in by the Whitechapel Playhouse to find Pretty Penny, a lovely, young actress who has gone missing without reason or notice. While on their search, the trio is asked by Scotland Yard to join in the hunt for a vicious murderer whose method resembles that of Jack The Ripper. It soon becomes clear that The Ripper has reemerged after a 28-year absence and is once again murdering young prostitutes in Whitechapel. Following a line of subtle clues, Joanna quickly reasons that Pretty Penny has been taken capture by the killer. But as Joanna moves closer to learning his true identity, the killer sends her a letter indicating her young son Johnny will be the next victim to die. Time is running out, and Joanna has no choice but to devise a most dangerous plan which will bring her face-to-face with the killer. It is the only chance to protect her son and rescue Pretty Penny, and save both from an agonizing death. The Abduction of Pretty Penny is a wonderful new entry in a series that the Historical Novel Society calls "one of the best Sherlock Holmes series since Laurie R. King's Mary Russell books."

The fate of the allied forces lies in the hands of Joanna and the Watsons in the next Daughter of Sherlock Holmes mystery from USA Today bestselling author Leonard Goldberg . During a critical stage in World War One, the Governor-General of South Africa journeys to London for a meeting of The Imperial War Conference. Days prior to the conference, the Governor-General is scheduled to have an audience at Buckingham Palace at which time a most precious blue diamond will be presented to King Edward as a symbolic gesture of the colonies’ resolute and never-ending allegiance to England. The flawless blue diamond, with its magnificent luster, weighs nearly 3000 carats which renders it one of the world’s largest and most valuable gems. On the Governor-General’s arrival, he is ensconced at the fashionable Windsor Hotel under the tightest security, with his entire entourage and formidable security team occupying the entire penthouse floor. All entrances and exits are locked down and closely guarded, and no one is allowed entrance after 6 PM. Despite the extreme precautions, the famous diamond is stolen from the Governor-General’s suite in the middle of the night, with no clues left behind. With Scotland Yard baffled, Joanna and the Watsons are called in to investigate the theft and it becomes clear that the crime is not simply the work of a master thief, but one that could greatly aid the Germans and turn the tide of war in their favor. Time is of the essence and the blue diamond must be recovered before it begins its travels which could cause irreparable damage to the allied war plans.

The fate of Prince Harry and the British throne lies in the hands of Joanna and the Watsons in the latest Daughter of Sherlock Holmes mystery from USA Today bestselling author Leonard Goldberg. During the height of the Great War, playboy Prince Harry, the third in line to the British throne, vanishes in thin air while horseback riding in Hyde Park The strikingly handsome playboy prince is initially believed to have arranged his disappearance so he can enjoy a brief rendezvous with one of his secret lovers. But when his absence continues on for days, the royal family grows concerned and summons Scotland Yard, who can only recover scant, unrevealing clues. The concern deepens when MI5 decodes a recent message from German spies in London which speaks of a captured asset that will bring great embarrassment to the Crown. There is a strong belief within the Intelligence agency that plans are underway to transport the captive prince to Berlin without delay. Despite an intensive search, no trace of the royal can be detected. With Scotland Yard and MI5 baffled, Joanna and the Watsons are called in, and they soon find themselves entangled in a web of abortion, murder, treason, and spies, all of which is seemingly being orchestrated by an arch-enemy of the long-dead Sherlock Holmes. In their race to rescue Prince Harry, it becomes clear that the mastermind behind the maze of crimes has a singular motive in mind. He desires overdue revenge in the form of Joanna’s death.

In the latest Daughter of Sherlock Holmes novel, Joanna Holmes must confront a shocking case of blackmail that threatens the highest levels of His Majesty’s government, as this USA Today bestselling mystery series continues. In the latest installment of this acclaimed series, Sherlock Holmes’s daughter faces an elaborate mystery that threatens the second most powerful man in His Majesty’s government. His position is such that he answers only to the king and the prime minister. During the height of the Great War, Joanna Holmes and the Watsons receive a late-night, clandestine visit from Sir William Radcliffe, the Chancellor of the Exchequer, who brings with him an agonizing tale of blackmail; a case so sensitive that it can only be spoken of in the confines of 221B Baker Street. An unknown individual has come into possession of salacious photographs, which not only sullies the family name, but may force the chancellor to vacate his seat on the War Council where his advice is most needed. The blackmailer has in their possession revealing photographs that show Sir William’s granddaughter in romantic encounters with a man other than the aristocrat to whom she is engaged to marry. Should the pictures be released to the public, the wedding would be immediately called off, and the prospect of the granddaughter ever finding a suitable husband would vanish. Sir William's family has been forced to pay exorbitant sums for several of the photographs, but even more salacious pictures remain in the blackmailer’s possession—and will no doubt carry greater demands and threats. Scotland Yard cannot be involved, for fear of public disclosure. It thus falls on the shoulders of Joanna and the Watsons to expose the blackmailer and procure the photographs before irreparable harm comes to the chancellor and his family.