Stung by the irony, Kunz bribed the elector's scullion, by name Hans Schwabe, to admit him and nine chosen comrades into the Castle of Altenburg on the night of the 7th of July, 1455, when the Elector was to be at Leipzig. Strange to say, this scullion was able to write, for a letter is extant from him to Sir Konrad, engaging to open the window immediately above the steep precipice, which on that side was deemed a sufficient protection to the castle, and to fasten a rope ladder by which to ascend the crags. This window can still be traced, though thenceforth it was bricked up. It gave access to the children's apartments, and on his way to them, the robber drew the bolt of their mother's door, so that though, awakened by the noise, she rushed to her window, she was a captive in her own apartment, and could not give the alarm, nor do anything but join her vain entreaties to the cries of her helpless children. It was the little son of the Count von Bardi whom Wilhelm von Mosen brought down by mistake for young Albrecht, and Kunz, while hurrying up to exchange the children, bade the rest of his band hasten on to secure the elder prince without waiting for him. He followed in a few seconds with Albrecht in his arms, and his servant Schweinitz riding after him, but he never overtook the main body. Their object was to reach Konrad's own Castle of Isenburg on the frontiers of Bohemia, but they quickly heard the alarm bells ringing, and beheld beacons lighted upon every hill. They were forced to betake themselves to the forests, and about half-way, Prince Ernst's captors, not daring to go any father, hid themselves and him in a cavern called the Devil's Cleft on the right bank of the River Mulde.