By the time of my arrival in the Hague, the Countess had vacated her chambers in the Binnenhof and moved across the Plein to the house of the heretic 'philosopher' Christiaan Huygens, who is her friend. On the day of my arrival she departed for Amsterdam to pay a call on her business associates there. I paid a cat-burglar, who has done many such jobs for d'Avaux in the past, to enter the house of Huygens, find the embroidery, and bring it to me without disturbing anything else in the room. Three days later, after I had conducted an analysis detailed below, I arranged for the same thief to put the embroidery back just where he had found it. The Countess did not return from her sojourn to Amsterdam until several days afterwards.