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The Crystal Stopper · Chapter

II: Eight from Nine Leaves One explained

Lupin reflects on the organization of his gang and the danger facing Gilbert and Vaucheray, who are accused of murder during the Enghien burglary.

What happens

Lupin reflects on the organization of his gang and the danger facing Gilbert and Vaucheray, who are accused of murder during the Enghien burglary. He investigates the mysterious crystal stopper, which was stolen from his flat, and learns about Deputy Daubrecq. A woman visits Lupin's flat but vanishes; later, Lupin spies on Daubrecq, who detects him and taunts him with the subtraction 'eight from nine leaves one.'

Themes in this chapter

  • Deception and Identity

    Lupin uses the alias Michel Beaumont; Daubrecq detects Lupin's hidden presence.

  • Crime and Punishment

    Gilbert and Vaucheray face the death penalty for murder during a burglary.

Characters to notice

  • Arsène Lupin

    Narrates his thoughts on his gang, investigates the crystal stopper theft, and spies on Daubrecq.

  • Gilbert

    Mentioned as a trusted accomplice in prison, suspected of betrayal.

  • Vaucheray

    Mentioned as an accomplice in prison, facing murder charges.

  • Alexis Daubrecq

    Deputy under surveillance; Lupin spies on him and is detected.

  • Prasville

    Secretary-general of the Prefecture of Police; Daubrecq writes him a letter.

Key passages

  • Eight from nine leaves one

    Daubrecq performs a subtraction that implies one person remains hidden.

    Daubrecq uses the arithmetic to reveal he knows Lupin is hiding in the curtain.

  • Help! Murder! I shall be killed!

    Léonard's desperate phone call before his death.

    This call is used as evidence against Gilbert and Vaucheray.