VII explained

What happens

Themes in this chapter

• Deception and Appearances

  The vinegar in the wine glasses and the planted cloth piece reveal the murderers' attempt to mislead investigators, while Lecoq and Plantat each feign ignorance to probe the other's knowledge.

• Detection and Rationality

  Lecoq's methodical examination of the glasses, hatchet, and floor marks contrasts with Domini's hasty conclusions, highlighting the rational, empirical approach of the detective.

Characters to notice

• M. Lecoq

  Disguised as a haberdasher, he privately investigates the crime scene, deducing the vinegar trick and the hatchet being thrown in panic; he suspects Plantat knows more than he reveals.

• M. Plantat

  Accompanies Lecoq, shares observations, and is visibly surprised by Domini's confidence in Guespin's guilt; he subtly tests Lecoq's acumen and holds back his own theories.

• M. Antoine Domini

  The judge who dismisses complexity, insists on Guespin's guilt based on the vest and torn cloth, and leaves after making an appointment with Plantat.

• Guespin

  Arrested and led to prison, his blood-stained vest and a torn piece found in the countess's hand are used as key evidence against him.

• Philippe Bertaud

  Old Bertaud, also arrested, begins to contradict himself under questioning and is said to have seen the assassins.

• François

  The valet who answers Lecoq's questions about wine bottles and cellar practices, confirming no full bottles were kept in the dining room.

Key passages

• “If you will permit me, I will postpone making my report till tomorrow afternoon. I think I may say, however, that complicated as this affair is⁠—” M. Domini did not let him finish. “I see nothing complicated in the affair at all; everything strikes me as very simple.””

  Lecoq asks to delay his report until the next day, hinting at the case's complexity, but Judge Domini interrupts, insisting the case is straightforward.

  Highlights the immediate conflict between Lecoq's investigative caution and Domini's overconfidence.

• “No one has drank from these glasses,” said he, firmly. “What, from neither one of them?” The detective fixed a penetrating look upon his companion, and in a measured tone, said: “From neither one.””

  Lecoq declares that none of the glasses had been used for drinking, surprising Plantat.

  Demonstrates Lecoq's keen observation and the first clue that the crime scene was staged.

• “It was not wine that was at the bottom of these glasses. Among all the empty bottles put away in the bottom of that closet, there was one⁠—here it is⁠—which contained vinegar; and it was from this bottle that they turned what they thought to be wine into the glasses.”

  Lecoq discovers that the liquid in the glasses is actually vinegar from a bottle in the closet, proving the perpetrators tried to fake evidence of a drinking party.

  Key piece of forensic deduction that exposes the deception.

• “This hatchet wasn’t put on the floor gently; it was thrown with a violence betraying either great terror or great anger. Look here; do you see these three marks, near each other, on the floor?”

  Lecoq points out that the hatchet was hurled down forcefully, leaving multiple impact marks, indicating panic or rage rather than a calculated placement.

  Reveals Lecoq's ability to read physical evidence and infer the emotional state of the perpetrators.