Trenck's first confinement was in 1746, when he was thrown into the Castle of Glatz, on a charge of corresponding with his cousin and namesake, who was in the service of the Empress Maria Theresa, and of being an Austrian spy. At first he was kindly treated and allowed to walk freely about the fortifications, and he took advantage of the liberty given him to arrange a plan of escape with one of his fellow-prisoners. The plot was, however, betrayed by the other man, and a heavy punishment fell on Trenck. By the king's orders, he was promptly deprived of all his privileges and placed in a cell in one of the towers, which overlooked the ramparts lying ninety feet below, on the side nearest the town. This added a fresh difficulty to his chances of escape, as, in passing from the castle to the town, he was certain to be seen by many people. But no obstacles mattered to Trenck. He had money, and money could do a great deal. So he began by bribing one of the officials about the prison, and the official in his turn bribed a soapboiler, who lived not far from the castle gates, and promised to conceal Trenck somewhere in his house. Still, liberty must have seemed a long way off, for Trenck had only one little knife with which to cut through anything. By dint of incessant and hard work, he managed to saw through three thick steel bars, but even so, there were eight others left to do. His friend the official then procured him a file, but he was obliged to use it with great care, lest the scraping sound should be heard by his guards. Perhaps they wilfully closed their ears, for many of them were sorry for Trenck; but, at all events, the eleven bars were at last sawn through, and all that remained was to make a rope ladder. This he did by tearing his leather portmanteau into strips and plaiting them into a rope, and as this was not long enough, he added his sheets. The night was dark and rainy, which favored him, and he reached the bottom of the rampart in safety. Unluckily, he met here with an obstacle on which he had never counted. There was a large drain, opening into one of the trenches, which Trenck had neither seen nor heard of, and into this he fell. In spite of his struggles, he was held fast, and his strength being at last exhausted, he was forced to call the sentinel, and at midday, having been left in the drain for hours to make sport for the town, he was carried back to his cell.