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278 One day the mask slipped off, and the miserable wretch perished in his crimes. His corpse was found on the following morning in the obscure lodging where he had fitted up his laboratory, and with it papers which disclosed the whole series of murders perpetrated by the pair. The Marchioness fled to England, where she remained for three years, but went early in 1676 to Liège. There she was caught, brought to Paris, executed, and her body burnt.

La Guesdon, along with her husband, had been in the service of Sainte Croix, and before her marriage had been in that of the Marchioness. She had been implicated in the poisonings. La Chappelain had acted in Paris the part of a fortune-teller. By means of her supposed prevision of the future she was able to presage the death of those marked down by Mme. de Brinvilliers and Sainte Croix for destruction. La Guesdon died in the prison at Villefranche in 1717, La Chappelain in 1724.

In the place itself is the opening into an extensive cavern. In 1674 a conspiracy was raised to capture the citadel and deliver it over to the Spaniards. It was widely ramified through the Cerdagne and Roussillon, neither content at having been made over to France by the Treaty of the Pyrenees. Some of the leading spirits in the plot were the men of the family of Llar, in Villefranche, whose dilapidated and dingy hôtel may be seen in the Rue des Juifs. The cavern mentioned served as a place of meeting and a storehouse for arms. The conspiracy was betrayed by Inez de Llar, daughter of the chief man in the plot, Charles de Llar. He and her brother and relatives involved in it were executed. The unfortunate Inez, broken-hearted at having brought ruin on her family, ended her days in a convent.

In 1793 the Spanish general Crespo succeeded in making