Introduction
You often find yourself facing puzzles that defy ordinary logic and demand an extraordinary mind to unravel. When complex crimes baffle Scotland Yard and leave the public in a state of panic, you need a method that goes beyond standard police procedure. Arthur Conan Doyle presents the ultimate solution in The Return of Sherlock Holmes. This collection marks the dramatic resurrection of the world's most famous consulting detective, who miraculously survived his fatal encounter with Professor Moriarty at the Reichenbach Fall.
You learn that Holmes did not perish in the Swiss abyss. Instead, he returns to 221B Baker Street alongside his loyal friend and chronicler, Dr. John Watson. The central idea of the book is that the most bewildering mysteries yield to rigorous observation, absolute deduction, and a profound understanding of human nature. You discover how the master sleuth tackles seemingly impossible crimes, from locked-room murders and cryptographic messages to political blackmail and art vandalism.
The book takes you through a series of thirteen distinct cases that test the limits of analytical reasoning. You explore how Holmes uses obscure clues, physical anomalies, and psychological insights to outsmart cunning criminals. The narrative structure follows these individual investigations while simultaneously revealing the survival tactics and renewed partnership of Holmes and Watson.
You might wonder as you read these pages how certain crimes are solved:
- How can a detective survive an apparent fatal fall from a treacherous cliff?
- What method decodes secret messages written as dancing figures?
- Why do plaster busts of Napoleon become the focus of a desperate search?
- How does a physical object left behind at a desk reveal an academic cheat?
- Where do you find a stolen state document hidden in plain sight?
1. The Adventure of the Empty House
Holmes survived his fatal encounter with Professor Moriarty by utilizing his knowledge of Japanese wrestling.
The Return to Baker Street
You discover that Sherlock Holmes did not die at the Reichenbach Fall. Holmes explained to Watson that he used baritsu, the Japanese system of wrestling, to slip through Moriarty's grip on the narrow ledge above the abyss. Moriarty plunged into the depths while Holmes climbed to safety.
Holmes faked his death to draw out Moriarty's remaining vengeful accomplices. He spent time living in Tibet under the name Sigerson and researching coal-tar derivatives in France before returning to London.
The Air-Gun Assassin
Colonel Sebastian Moran utilized a unique, silent air-gun designed by a blind German mechanic to commit murder.
The weapon was constructed by Von Herder at Moriarty's order. It was noiseless, tremendously powerful, and fired soft revolver bullets that mushroomed upon impact to inflict fatal wounds.
Colonel Moran used the air-gun to shoot the Honourable Ronald Adair through the open window of 427 Park Lane to punish him after Adair discovered Moran cheating at cards and won 420 pounds in a card session. Moran held a high position as a shikari, but his criminal nature made him the most dangerous man in London once Moriarty fell.
2. The Adventure of the Norwood Builder
Jonas Oldacre faked his own murder and framed a young solicitor to ruin his creditors and punish his former fiancée.
John Hector McFarlane was accused of murdering Oldacre because his blood-stained walking-stick was found at the scene and Oldacre had just willed all his property to him. Jonas Oldacre was 52 years of age, while John Hector McFarlane was the approximate age of 27 years.
The Disappearance
Oldacre constructed a secret hiding-place behind a lath-and-plaster partition in his own house, burned animal remains and his own trousers in the timber-yard, and forged a thumb-mark on the wall using wax taken from a document seal moistened with blood.
The Secret Hiding-Place
3. The Adventure of the Dancing Men
A cryptographic system utilizing simple figures of dancing men can be systematically decoded by frequency analysis.
Hilton Cubitt of Riding Thorpe Manor in Norfolk brought bizarre notebook sketches of dancing figures to Holmes because they were terrifying his American-born wife. You can understand how these stick-figure drawings caused deep distress when they appeared on window-sills and gates.
Cryptic Drawings
The dancing men appeared in various positions with flags and outstretched arms. Each figure represented a letter or a word boundary in a substitution cipher. Holmes drew on his knowledge of cryptography, noting that English text contains specific letter frequencies.
Decoding the Threat
Holmes solved the cipher by treating the most frequently recurring symbol as the letter 'e'. By studying recurring groupings and context, such as the name 'Elsie' and words like 'come', he deciphered threatening messages left by an American criminal named Abe Slaney.
The analysis relied on systematic steps:
- identifying the repetition of specific stick-figure symbols;
- assigning the most common symbol to the letter 'e';
- matching short words to common English pronouns and articles;
- translating the remaining characters through context and known phrases.
Holmes had previously analysed 160 separate ciphers in his monograph on the subject. That prior work allowed him to read the Norfolk messages rapidly and track the sender to his hiding place.
4. The Adventure of the Priory School
Devious criminal plots can be tracked by analyzing unconventional animal tracks and physical peculiarities left at the scene.
Dr. Thorneycroft Huxtable collapsed on the bearskin rug at Baker Street while frantically reporting the disappearance of Lord Saltire from the Priory School. The Duke of Holdernesse offered a reward of 5000 pounds for information about his son. The Duke owned massive estates spanning 250,000 acres, giving you a sense of the immense scale of the search area.
The Missing Lord
You must look beyond obvious clues when a disappearance involves powerful figures. The school is located in an isolated region where the terrain holds the key to the mystery.
- Follow every local report of strange sounds or sightings.
- Examine the paths leading away from the school grounds.
- Question individuals who have access to private property.
The Cloven Hooves
Holmes deduced the involvement of the Duke's illegitimate son, James Wilder, and a confederate, Reuben Hayes. They used medieval iron shoes shaped like cloven cow hooves on horses to mask their trail across the moor.
This crude deception failed because the manufactured tracks did not match the natural gait or weight distribution of actual cattle. You can unravel complex plots by paying close attention to physical anomalies that betray the criminal's intent.
5. The Adventure of Black Peter
A brutal whaling captain met his end when a former harpooner defended himself against a sudden attack.
Peter Carey reached 50 years of age before he met a violent end inside his small hut. Locals knew him as Black Peter due to his fierce temper and dark history as a sealer and whaler. Someone pinned him to the wall of his cabin using a heavy whaling harpoon.
Stanley Hopkins suspected an anæmic youth named John Hopley Neligan, who was caught sneaking into the hut to examine old logbooks regarding his missing banker father.
The Harpoon Murder
You must look beyond obvious suspects when investigating a murder scene. The young banker was searching for clues related to an 1883 shipwreck and lost financial records.
Patrick Cairns, a former harpooner on the Sea Unicorn, killed Captain Peter Carey during a late-night confrontation over a tin box containing stolen banker's documents from that same 1883 shipwreck.
Uncovering the Truth
The weapon required immense physical strength to drive through a human body into the wall. Holmes deduced that the killer possessed specific skills:
- familiarity with heavy whaling gear;
- great physical power and precision;
- direct knowledge of the captain's habits.
You can solve complex crimes by matching the physical requirements of the act to the specific background of the perpetrator.
6. The Adventure of Charles Augustus Milverton
Charles Augustus Milverton operates as the king of blackmailers in London. He ruins lives with absolute coldness and demands extortionate sums to keep secrets hidden.
Breaking into a blackmailer's stronghold can be morally justified to prevent the mass ruin of innocent victims.
Holmes and Watson disguise themselves as working men to map out Appledore Towers, the residence of Charles Augustus Milverton. The blackmailer demands 7000 pounds for Lady Eva Blackwell's indiscreet letters. You cannot rely on the law when extortionists operate outside legal boundaries.
Holmes proposes a direct burglary to recover the letters before Lady Eva marries Lord Dovercourt. You must sometimes adopt criminal methods to stop a greater crime.
The Master Blackmailer
Milverton is 50 years of age and possesses the face of a polite cat. He stores his blackmail portfolios in a safe in his study.
You can identify professional exploiters by their complete lack of human empathy. Milverton views human misery as a simple ledger entry.
- He targets wealthy families on the eve of marriage.
- He calculates exact amounts that victims can barely afford.
- He maintains airtight security at his estate.
The Night Raid
Holmes and Watson cut a glass pane to enter the study at midnight. They hide behind a curtain when Milverton enters the room unexpectedly.
Milverton meets a veiled woman who demands the return of her own letters. When he refuses and mocks her ruin, she draws a pistol and shoots him dead.
Milverton was killed by a veiled woman whose husband had died of a broken heart after Milverton exposed her past indiscreet letters. Holmes and Watson burn the entire safe's contents in the study fireplace and escape into the night.
7. The Adventure of the Six Napoleons
Inspector Lestrade visits Baker Street to consult Holmes about a bizarre series of vandalisms. Someone is breaking plaster busts of Napoleon across London without any apparent motive.
A stolen priceless gem can be tracked across multiple manufactured items by tracing the production batches of plaster busts.
The Smashed Busts
Gelder & Co. manufactured two identical batches of six plaster busts of Napoleon. You can trace the distribution of these items through local shops and buyers:
- Dr. Nelson's Kennington Road office;
- Morse Hudson's shop in Kennington Road;
- Mr. Brown's residence in Kinnaird Street;
- Mr. Horace Harker's house in Pitt Street;
- Gelder & Co.'s warehouse.
Beppo, an Italian sculptor and criminal, hid the stolen Borgia pearl inside a wet plaster cast of Napoleon at Gelder & Co. before being arrested. Upon his release, he systematically tracked and smashed the distributed busts across London to recover the jewel.
The Borgia Pearl
Pietro Venucci was murdered outside Horace Harker's house in Pitt Street while dogging Beppo in an attempt to seize the pearl for the Mafia. Holmes discovers that Beppo has an IDEE FIXE regarding the final bust because the pearl remains trapped inside the plaster.
Holmes pays 10 pounds to acquire the final bust from a dealer after buying earlier ones for the wholesale price of 6 shillings. He smashes it on the floor of Baker Street to recover the Borgia pearl and capture Beppo.
8. The Adventure of the Three Students
Athletic equipment left inadvertently at a crime scene can instantly reveal the identity of an academic cheat.
While visiting a university town, you find yourself drawn into a baffling academic breach. Tutor Hilton Soames discovers that confidential scholarship exam proofs have been handled and copied in his study.
There are 3 students inhabiting the stair:
- Gilchrist, an athletic scholar with a brilliant academic record;
- Daulat Ras, an industrious Indian student living on the lower floor;
- Miles McLaren, a fast and clever fellow of loose habits.
Holmes examines the physical traces left in the study with minute care. He discovers small cuts on the polished desk, a discarded pellet of black pencil lead, and a fragment of a torn paper sheet.
Gilchrist jumped over the hurdles using athletic jumping-shoe spikes during practice. The metal spikes left physical impressions and specific black jumping-pit clay on the desk where he leaned to read the papers.
Bannister, the loyal servant who had been butler to Gilchrist's ruined father, covered for the student by sitting in a chair to hide his tan gloves until Holmes exposed the mechanism of the trespass.
9. The Adventure of the Abbey Grange
Sir Eustace Brackenstall was found murdered in his mansion after 18 months of marriage and residence in England. Lady Brackenstall and her maid Theresa claimed a random gang of vicious burglars broke into the house and committed the crime.
A forged account of a burglary can be exposed by examining physical anomalies in the arrangement of wineglasses and bell-ropes.
Holmes examined the crime scene and quickly realized the initial narrative was false. Specific details in the room contradicted the story of a random attack by intruders:
- The beeswing concentrated in a single glass showed unusual handling of the port;
- A bell-rope cut clean above a mantelpiece bracket rather than frayed at the top revealed deliberate human intervention.
These physical anomalies pointed toward an athletic sailor named Captain Jack Crocker. The evidence proved that Lady Brackenstall and her maid lied to protect the real perpetrator.
Captain Crocker confessed that he killed Sir Eustace with a poker after the baronet struck Lady Brackenstall, whom Crocker deeply loved.
10. The Adventure of the Second Stain
The Missing State Letter
A secret letter from a foreign potentate disappeared from the European Secretary's despatch-box. The document carried enough weight to trigger a European war if exposed. The despatch-box lay unguarded for 4 hours while the room was left vacant.
International spy Eduardo Lucas was found murdered in his London home shortly after the theft. Inspector Lestrade investigated the murder while British leaders sought the missing state paper. The official inquiries stalled as every external suspect possessed an alibi.
The Hidden Floorboard
Holmes examined the bloodstains on the carpet and the floorboards beneath the desk. He deduced that the killer's visitor had concealed the letter in a hiding-place beneath the floorboards.
The recovery of a politically explosive stolen document requires deducing its precise concealed location when all external suspects fail.
Lady Hilda Trelawney Hope confessed to stealing the document to retrieve an old indiscreet letter of her own from Lucas. Holmes slyly restored the lost state letter back into her husband's locked despatch-box before the theft was detected.
11. Origins and Legacy of Sherlock Holmes
You can trace the foundational traits of the world's most famous detective directly back to Edinburgh medical lecture halls. Arthur Conan Doyle built the character around the real methods of his university teacher.
Sherlock Holmes was directly inspired by Conan Doyle's former university teacher, Joseph Bell, whose methods served as the foundation for the character.
Conan Doyle acknowledged that he relied on the techniques he learned from Bell. These core skills defined the detective's unique approach:
- observation of minute physical details;
- inference from visible clues;
- deduction based on medical science.
Robert Louis Stevenson recognized the striking similarity from afar while reading the stories from Samoa. He wrote to Conan Doyle to ask if the detective was his old friend Joe Bell.
The Real Joseph Bell
Joseph Bell possessed an uncanny ability to diagnose a patient's occupation and background before a word was spoken. You would watch in astonishment as he deduced a stranger's history from trivial marks on their clothing.
Conan Doyle translated these medical demonstrations into criminal investigations. The fictional consultant applied the exact diagnostic rigor of an Edinburgh surgeon to the dark alleys of London.
Resurrection and Public Outcry
You might find it surprising that the author attempted to permanently end the series to pursue other literary ambitions. Conan Doyle wanted to dedicate his time to more substantial historical novels.
Feeling that the detective distracted him from better things, Conan Doyle orchestrated a dramatic conclusion. In 'The Final Problem', Holmes and Professor Moriarty apparently plunged to their deaths together down the Reichenbach Falls in 1893.
The literary canon ultimately encompasses four Conan Doyle novels and 56 short stories featuring Sherlock Holmes. Widespread public outcry eventually forced Doyle to resurrect the character and bring him back to print.
12. Conan Doyle's Later Campaigns and Beliefs
Conan Doyle used his fame, legal investigations, and spiritualist beliefs to champion justice and explore the paranormal.
Correcting Miscarriages of Justice
Arthur Conan Doyle applied detective methods beyond fiction to real life. You can see how his public influence and political writings defending the United Kingdom's conduct in the Boer War earned him his knighthood. He served as a volunteer doctor in the Langman Field Hospital at Bloemfontein between March and June 1900. After his service, he wrote a justificatory pamphlet titled 'The War in South Africa: Its Cause and Conduct' and a longer book, 'The Great Boer War', which resulted in his being knighted and appointed Deputy-Lieutenant of Surrey in 1902.
Conan Doyle later investigated closed cases where innocent people faced wrongful convictions. George Edalji, a shy half-British, half-Indian lawyer and Parsee, was convicted and jailed, but the animal mutilations continued while he was imprisoned, prompting Doyle's intervention. Investigating this closed case directly contributed to the creation of a legal mechanism to correct miscarriages of justice, leading to the establishment of the Court of Criminal Appeal in the United Kingdom in 1907.
Oscar Slater, a German Jew and gambling-den operator, was convicted of bludgeoning an 82-year-old woman in Glasgow in 1908, but Conan Doyle helped secure his exoneration in 1928. Noticing severe inconsistencies in the prosecution's case, Conan Doyle intervened and paid most of the costs for a successful appeal.
Embracing Spiritualism
Personal tragedies and the loss of family members drove Conan Doyle to embrace spiritualism as a solace and a subject of serious investigation. Following the deaths of his first wife, his son Kingsley, his brother, and several other relatives around the period of World War I, Conan Doyle sank into depression and dedicated himself to supporting spiritualism, writing books on the subject, and studying paranormal phenomena. His son Kingsley died from pneumonia on 28 October 1918, having contracted it while convalescing after being seriously wounded at the Battle of the Somme.
Conan Doyle's firm belief in supernatural powers led to a bitter public falling out with magician Harry Houdini. While Harry Houdini dedicated himself to exposing spiritualist mediums as tricksters and frauds, Conan Doyle became fully convinced that Houdini himself possessed genuine supernatural powers, causing an irreparable rift between the two former friends. Houdini was unable to convince Conan Doyle that his miraculous escapes and feats were simply stage illusions, resulting in a public dispute documented in Conan Doyle's 'The Edge of the Unknown'.
10 Key Ideas
- Sherlock Holmes survived his fatal encounter with Professor Moriarty by utilizing his knowledge of Japanese wrestling.
- Colonel Sebastian Moran utilized a unique, silent air-gun designed by a blind German mechanic to commit murder.
- A cryptographic system utilizing simple figures of dancing men can be systematically decoded by frequency analysis.
- Devious criminal plots can be tracked by analyzing unconventional animal tracks and physical peculiarities left at the scene.
- A brutal whaling captain met his end when a former harpooner defended himself against a sudden attack.
- Breaking into a blackmailer's stronghold can be morally justified to prevent the mass ruin of innocent victims.
- A stolen priceless gem can be tracked across multiple manufactured items by tracing the production batches of plaster busts.
- Athletic equipment left inadvertently at a crime scene can instantly reveal the identity of an academic cheat.
- A forged account of a burglary can be exposed by examining physical anomalies in the arrangement of wineglasses and bell-ropes.
- Sherlock Holmes was directly inspired by Conan Doyle's former university teacher, Joseph Bell, whose methods served as the foundation for the character.