The Book in Brief
A wireless message announces that Arsène Lupin is aboard the transatlantic liner La Provence. The apparent narrator helps identify a suspect, only to be exposed on arrival as Lupin himself. Detective Ganimard arrests him.
From prison, Lupin directs the robbery of Baron Cahorn and manipulates the legal process. He then escapes after preparing the authorities to believe that a substituted prisoner is not the famous burglar.
The remaining stories follow thefts, disguises, family secrets, and investigations: a robbery on a train, the recovery of the queen's necklace, the mystery of the seven of hearts, Lupin's own encounter with fraud, and his solution to the Black Pearl murder.
In the finale, Lupin and Sherlock Holmes race toward the same castle mystery. Lupin removes the treasure and leaves the detective with a victory that arrives too late.
Important Characters
Arsène Lupin: A gentleman-burglar whose disguises, deductions, and theatrical planning make him both criminal and detective.
Inspector Ganimard: Lupin's persistent police adversary, capable but repeatedly forced to play within Lupin's scripts.
Miss Nelly Underdown: A shipboard acquaintance whose judgment matters to Lupin even when she recognizes his identity.
Sherlock Holmes: Conan Doyle's detective, borrowed by Leblanc as Lupin's formidable English rival; only in later sequels did Leblanc rename him 'Herlock Sholmes.'
The recurring narrators and clients: Observers whose limited knowledge lets Lupin hide in plain sight and reveal the trick at the end.
Story-by-Story Summary
The headings and sequence follow the nine stories of the complete Project Gutenberg edition.
Story 1: The Arrest of Arsène Lupin
A wireless message announces that Lupin is aboard La Provence under an incomplete alias. The narrator helps Miss Nelly and the passengers identify a suspect, but Ganimard exposes the narrator himself as Lupin when the ship docks.
Story 2: Arsène Lupin in Prison
Imprisoned Lupin promises Baron Cahorn that his treasures will be stolen unless he pays. The robbery occurs under Lupin's direction, proving that confinement has not ended his control.
Story 3: The Escape of Arsène Lupin
Lupin prepares the authorities to expect a substitution and then exploits their disbelief during his transfer and trial. Ganimard realizes too late that the apparent prisoner is the genuine Lupin making his escape.
Story 4: The Mysterious Traveller
A disguised Lupin shares a train compartment with a criminal and is robbed and bound by the very man blamed for being him. He recovers the stolen goods and redirects the police while preserving his own disguise.
Story 5: The Queen’s Necklace
The theft of Marie Antoinette's necklace is traced through an aristocratic family's history. Lupin reveals a childhood connection to the crime and controls the jewel's eventual disposition.
Story 6: The Seven of Hearts
A death, coded correspondence, and the mysterious seven of hearts draw the narrator into a larger secret. Lupin uncovers the hidden mechanism and settles the case through a mixture of detection and personal justice.
Story 7: Madame Imbert’s Safe
Lupin tries to exploit the apparently wealthy Imberts, only to learn that their fortune and safe are part of a fraud aimed at him. The gentleman-burglar becomes the embarrassed victim of better confidence artists.
Story 8: The Black Pearl
When a woman is murdered and the Black Pearl disappears, Lupin investigates rather than merely steals. He reconstructs the room's secret and identifies the killer while retaining his characteristic control over the outcome.
Story 9: Sherlock Holmes Arrives Too Late
Lupin and Sherlock Holmes pursue the same castle secret and hidden passage. Holmes solves the route, but Lupin has already removed the treasure, turning the detective's success into an arrival too late.
Ending Explained
Does Lupin always steal?: No. Some stories turn on detection, restitution, sentimental restraint, or revenge against people trying to deceive him.
Why does Holmes arrive too late?: Lupin understands the hidden passage and controls the timing, allowing the detective to solve the structure after the treasure is gone.
What unifies the stories?: Lupin's main achievement is authorship of appearances: he decides what police, victims, and readers believe they are seeing.
Themes and Motifs
Performance: Disguise and role-playing are Lupin's most reliable tools.
Crime as puzzle: The collection values ingenious method and revelation more than punishment.
Reputation: Lupin protects the legend of his elegance as carefully as any stolen object.
Class: Aristocratic homes and inherited valuables become both targets and theatrical settings.
Content Notes
Includes theft, firearms, murder, confinement, deception, romantic manipulation, and dated class or ethnic stereotypes.
About the Book
Best for: readers who like gentleman thieves, caper puzzles, and stories where the narrator may be the trick. Narrative shape: nine stories, opening with an arrest-prison-escape trilogy and closing with a duel of celebrity detectives. Central contrast: the elegance of Lupin's performances versus the manipulation that makes them work. Overall assessment: 4.5/5 for construction, wit, and variety. Source-checked scope: 9 distinct reading units in Project Gutenberg eBook #6133; no front matter was counted as narrative content.
Primary text: Maurice Leblanc, The Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar, Project Gutenberg eBook #6133. The complete text contains nine stories. The review, plot account, ending analysis, and every structural recap in this guide were checked against that edition.
Selection evidence: Project Gutenberg Top 100 EBooks in the last 30 days — rank #23 with 97,289 downloads in the August 3, 2026 snapshot. Books already completed in the preceding batches were excluded.