# From Caesar to Lupin explained — The Hollow Needle

> Chapter companion for The Hollow Needle by Maurice Leblanc.

## What happens

Beautrelet, inspired by Lupin's boast that it took him ten days to solve the mystery of the Hollow Needle, decides to abandon direct pursuit and instead focus solely on the pamphlet and the document that Lupin used. He isolates himself in Paris to think, and after thirteen days deduces that all historical events linked to the secret occurred within the old kingdom of Neustria (Normandy). He narrows the search to the Cauchois triangle between Rouen, Dieppe, and Le Havre, and retraces Lupin's steps along the Seine. Disguised, he encounters a horse-dealer who recognizes him—revealing himself as a fellow pursuer of the secret.

## Themes in this chapter

### Hidden History and Secrets

The chapter reveals that the secret of the Hollow Needle is interwoven with the history of Normandy and French royalty.

### Intellect and Cunning

Beautrelet uses deductive reasoning to narrow the search to the Cauchois triangle, mirroring Lupin's methods.

### Treasure and Wealth

The secret of the Needle is a source of immense treasure, sought by kings and Lupin alike.

## Character check-ins

### Isidore Beautrelet

Deduces that the secret of the Hollow Needle is tied to Normandy and the Cauchois triangle; retraces Lupin's steps along the Seine.

### Arsène Lupin

Referenced as having taken ten days to solve the mystery; his boast influences Beautrelet's strategy.

### M. Massiban

Mentioned as having found the pamphlet by accident, similar to Lupin.

## Key lines

> Dash it all, it took me ten days! Me! Lupin! You will want ten years, at least!⁠—

Lupin boasts that he solved the mystery in ten days, implying Beautrelet will take much longer.

_This remark spurs Beautrelet to change his approach and focus on the pamphlet and document._

> The kings of France carry secrets that often decide the fate of towns!

French kings possess secrets that can determine the destiny of cities.

_Beautrelet interprets this as linking Francis I's founding of Le Havre to the secret of the Needle._

## Links

- HTML: https://www.betterreads.online/discover/the_hollow_needle_se/chapters/viii-from-caesar-to-lupin
- Book: https://www.betterreads.online/discover/the_hollow_needle_se
- All chapters: https://www.betterreads.online/discover/the_hollow_needle_se/chapters