Meanwhile Madame Antoine d'Aubray, widow of the last civil lieutenant and sister-in-law of the marchioness, had learned what was going on--that her husband had actually died of poison as the doctors had suspected. Hastening to Paris, she presented a petition to the Châtelet on September 10, and was admitted a plaintiff in a civil action for damages against La Chaussée and Madame de Brinvilliers. The latter had just fled to England, with no other attendant than a kitchenmaid. All suspicions were at once confirmed. The action against La Chaussée heard before the Châtelet ended on February 23, 1673, in a decree sentencing the defendant to the preliminary torture, _manentibus indiciis_. If the wretched man gave proof of endurance under torture, it would be the salvation both of himself and of the marchioness. Madame d'Aubray made a passionate intervention. She appealed to the Parlement,[4] endeavouring to prove, in a fresh affidavit, that the charges had been fully sustained, and that it was not permissible to have recourse to a preliminary dubious in itself and one that might snatch the criminals from due punishment. The case was reopened at the Tournelle.[5] In spite of a skilful defence, La Chaussée was condemned to death on March 24, 1673. The sentence set forth that he was convicted of poisoning, and condemned to be broken alive on the wheel after being put to the 'question ordinary and extraordinary,' and that Madame de Brinvilliers was to be beheaded for contempt of court. When submitted to torture, La Chaussée displayed uncommon courage and denied everything. The mode of torture adopted was that of the boot. The legs of the condemned man were placed between boards, which were driven by degrees closer together by the introduction of eight wedges in succession, the legs being thus horribly mangled. Released from the machine, he was carried on a mattress to a corner of the fireplace, and refreshed with brandy. In anticipation of instant death, La Chaussée voluntarily confessed his crimes, including the poisoning of Villequoy's tart, and then spoke of the iniquities of Madame de Brinvilliers. 'What accuser,' says La Reynie, 'would have been listened to for a moment if God had not permitted the capture of this valet, whom the first judges could not condemn for want of proof, but whom the Parlement condemned on conjectures and strong presumptions; and if God had not touched the heart of this wretch, who, after having suffered torture in absolute silence, confessed his crimes a moment before being executed?' La Chaussée was broken on the wheel the same day. * * * * * Taking refuge in London, the marchioness led a wretched existence, in distress which she found insupportable, and a prey to incessant fears.