10 h 6 minAudiobook14 minSummaryRead it, hear it, the 15-minute summary, and print and large print at cost
Audiobook edition · 10 h 6 minPaperback · 6 × 9 in · printing soonHardcover · 6 × 9 in · printing soonAbout this book
Hidden gold draws dangerous people into wartime Paris—and a gentleman burglar returns to outwit them.
In Maurice Leblanc’s The Golden Triangle, Paris is a city of soldiers, secrets and strained nerves. Arsène Lupin returns to a world changed by war, where hidden gold lies at the heart of a dangerous mystery. Finding it means reading a web of clues while others pursue the same prize.
Lupin brings charm, disguise and nerve to the hunt. He stands on the wrong side of the law, yet follows a private code of honor and defends the weak. Around him, bold schemes and quick escapes keep the story moving. The pleasure lies in watching a clever rogue find a way through danger.
What you’ll discover
- A city under strain Step into wartime Paris, where soldiers and secrets fill a world changed by conflict.
- Gold worth the danger Follow a treasure hunt whose hidden prize draws dangerous people into the chase.
- Clues that demand attention Look closely at small marks, odd objects and strange patterns that may point toward gold.
- The art of disguise Watch Lupin use borrowed identities, nerve and quick thinking to get past obstacles.
- A rogue with honor Meet a thief whose loyalty to the weak complicates his place outside the law.
Who will love it
Readers who love fast plots, secret hoards and old family mysteries will enjoy this one. It suits anyone who likes wartime Paris, gentleman rogues and chapters that end on a cliff edge.
What’s inside
The key ideas, in the 15-minute summary
- A band of wounded soldiers saves a nurse
- A declaration of love and half a bead
- A rusty key opens the door to danger
- Torture by fire ends in a deal for millions
- Coralie lifts a dagger and a dying voice calls
- A hoard of hidden gold drives the plot
- The old lodge becomes a sealed tomb
- A stranger with a smile pulls them back
- Wounded men demand their place in the sun
- A story told in doubles, symbols and cliffhangers
Who’s who
- Patrice BelvalA cheerful captain with a wooden leg and a wounded head, he falls in love with his nurse and vows to protect her.
- Coralie EssarèsCalled Little Mother Coralie by her patients, she is a kind nurse trapped in a hated marriage and hunted by unknown enemies.
- Ya-BonA one-armed Senegalese soldier who cannot speak, he worships his captain and guards Coralie with the strength of his single hand.
- Essarès BeyA rich Levantine banker in Paris, he keeps a dark secret about gold that his former partners will torture to learn.
- SiméonThe silent secretary in scarf and yellow glasses, who knows the garden and the past and seems to watch Coralie.
- M. MasseronA retired magistrate set to find the hidden gold, he wants the affair kept quiet and hopes to win the captain's help.
- Don Luis PerennaA smiling, witty stranger who arrives to save the lovers and claims he is on a secret mission for France.
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The Golden Triangle
by Maurice Leblanc · 1918
A one-legged captain saves a nurse from a kidnapping, then finds half of his own amethyst bead in her rosary.
Medium level10–20 hours to readEnglish
Excellent
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In short
It is the evening of April 3, 1915, and seven crippled soldiers stand motionless behind trees in a quiet Paris square. They wait for a nurse in a blue cloak, and for the men who mean to seize her.
The Golden Triangle at a glance
- Reading time
- About 5 h 50 min4 h 35 min fast, 6 h 55 min slow
- Length
- 82,800 words
- Library level
- Medium longer sentences, everyday words
- First published
- 1918by Maurice Leblanc
Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated
From the 15-minute summary · Key idea 1
A band of wounded soldiers saves a nurse
Captain Patrice Belval has a wooden leg and a bandaged head. One morning he overhears two foreigners in a restaurant. They plan to seize a woman who leaves a hospital at seven each evening. Belval guesses they mean the nurse the patients call Little Mother Coralie.
Rather than warn her, he gathers seven of her former patients, men with missing limbs and other wounds. They take their places behind trees and a kiosk in the square.
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Which edition is right for me
- 15-minute summary
- The key ideas of the whole book in about 14 minutes. A good first look, or a refresher.
Details
- First published
- 1918
- Language
- English
- Reading time
- 6 h 35 min
- Level
- Medium level
Cite this edition
Leblanc, Maurice. The Golden Triangle. Library of Alexandria, 2026, libraryofalexandria.com/products/the-golden-triangle.
Leblanc, M. (2026). The golden triangle. Library of Alexandria. https://libraryofalexandria.com/products/the-golden-triangle (Original work published 1918)
Leblanc, Maurice. The Golden Triangle. Library of Alexandria, 2026. https://libraryofalexandria.com/products/the-golden-triangle.
@book{leblanc2026golden,
author = {Leblanc, Maurice},
title = {The Golden Triangle},
publisher = {Library of Alexandria},
year = {2026},
url = {https://libraryofalexandria.com/products/the-golden-triangle},
note = {First published 1918}
}
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What is The Golden Triangle about?
It follows a wounded French captain who saves a nurse from kidnappers in 1915 Paris. Their lives are linked by a broken amethyst bead, a murder twenty years old, and a hoard of gold hidden somewhere near a house in Passy.
Is Arsène Lupin in The Golden Triangle?
Lupin joins the story midway, under the name Don Luis Perenna. He comes at the call of the captain's orderly Ya-Bon, solves clues quickly, and brings humor and cunning to the hunt for the gold.
What does the golden triangle mean?
It is a phrase found on a scrap of paper and on a wall in the old secretary's room. The characters spend much of the book guessing what it points to, and the answer is simpler than they expect.
The author
Maurice Leblanc
1864–1941 · French mystery novelist
Maurice Leblanc was a French writer born in Rouen in 1864. He wrote novels and short stories, including the Arsène Lupin series, which began in 1905. His books include The Hollow Needle, published in 1909, and The Crystal Stopper, published in 1912. He died in Perpignan in 1941.
More by Maurice Leblanc
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