 Marcel Pagnol deduces that this journey consisted of a genuine investigation into the socio-political situation in Pignerol, long conversations with the prisoner, as well as a visit to the ambassador of Turin on Sunday 10 August.As for Vauban, his mission consisted of building a strong room for the prisoner, the work only being completed in May of the following year.Marcel Pagnol concludes that Louis XIV discovered important information about Roux de Marcilly's plot in the letters from Charles II to his sister Henrietta