Hardquanonne’s death during interrogation ends his role as a living witness in the case against Gwynplaine. Released from the stones, iron plate, and chains of peine forte et dure, he lies motionless while officials test for signs of life. The doctor’s examination confirms that he is dead, and the sheriff’s response makes clear how little the proceeding values his survival once his confession has been secured.

The interrogation and its immediate aftermath

The death follows the confrontation between Hardquanonne and Gwynplaine, which Barkilphedro attended. The narrative says that the legal preliminaries had been completed in secrecy before that confrontation took place. It does not provide a full account of what Hardquanonne said there, but the sheriff later refers to a confession already obtained. His remark makes the sequence stark: the state has extracted what it needs, and the prisoner’s condition is treated as secondary to the legal result.

At the end of the punishment, the sheriff signals for the ordeal to stop. An assistant removes the stones from Hardquanonne’s chest one by one, lifts away the iron plate, and frees his wrists and ankles from the chains fastening him to pillars. The prisoner remains flat on the ground, eyes closed and limbs apart. The description presents his release not as a return to ordinary life but as the moment when officials discover that he cannot respond.

The assistant raises and drops each hand; both fall back. He lifts Hardquanonne’s feet, and they too fall to the ground. These checks establish his complete lack of movement before the doctor examines him. The scene’s sequence matters: the restraints are taken off, the body is tested, and only then does a medical authority pronounce death. The proceeding that has treated the prisoner as an object of interrogation now confirms his death through equally procedural gestures.

The doctor’s finding and the sheriff’s response

The doctor takes a small steel mirror from his robe and holds it to Hardquanonne’s open mouth. He then opens the prisoner’s eyelids; they stay open, and the eyes remain fixed. From these signs, the doctor declares him dead. The evidence offers no further medical explanation. Instead, the doctor adds that laughter killed him, a brief diagnosis that gives the scene its grotesque reversal: laughter, usually associated with life and public amusement, is named as the cause of a prisoner’s death.

The sheriff’s answer is colder still. Since Hardquanonne has confessed, he says, whether the prisoner lives or dies is merely a formality. The confession has therefore altered the practical stakes for the authorities without restoring any value to the man himself. His death does not interrupt the legal process or prompt visible reconsideration; it is absorbed into the procedure as an outcome that no longer changes what the officials have obtained.

Laughter, bodily control, and the novel’s contrasts

The doctor’s attribution gains force from the novel’s wider treatment of Gwynplaine’s face. Gwynplaine’s mouth and features have been shaped into an apparently laughing expression, and his face provokes laughter even though his thoughts and feelings do not share it. The expression is involuntary and cannot simply be removed; suffering or other emotion only intensifies the appearance. The contrast is not that Hardquanonne and Gwynplaine suffer the same condition, but that the scene places laughter beside coercion and bodily power: in one case it is named as the immediate cause of death, while in the other it is a permanent mark imposed on a life.

That contrast returns with political force when Gwynplaine later addresses the peers. He identifies the smile on his face as a mark placed there by a king and presents it as an image of humanity deformed by its rulers. His speech does not recount Hardquanonne’s death, but it sharpens the significance of a narrative in which the prisoner dies after a confession has been secured and the authorities continue as though the difference between life and death were negligible. The body becomes evidence of power exercised over a person who cannot meaningfully resist it.

Consequence and narrative significance

Hardquanonne’s death closes the confrontation that made his testimony consequential. The sheriff’s reference to the confession establishes that the authorities consider their immediate purpose fulfilled, while the doctor’s finding confirms that the witness will not survive to participate further. The account supplies no subsequent statement from Hardquanonne and no indication that his death changes the confession’s legal status. Its emphasis instead falls on the disparity between official procedure and human consequence.

The episode also reverses the usual social function of laughter. Gwynplaine’s face makes spectators laugh despite his own inward distress; Hardquanonne’s laughter, in the doctor’s terse account, is fatal. In both cases, laughter is detached from uncomplicated amusement, but the circumstances remain distinct: Gwynplaine’s is a lasting facial expression imposed on him, whereas Hardquanonne’s death follows the interrogation and punishment. Together, these details make the scene more than a report of a prisoner’s death. It shows a legal order that can treat confession as sufficient and death as incidental, while the novel’s recurring image of laughter carries the cost of power written onto the body.