Her plan was perilously simple, but the only one possible; for Gaston was well guarded, and out of that lofty cell it seemed that no prisoner could escape without wings. A bird and a woman lent him those wings, and his daring flight was a nine days' wonder at the fort. Only a youth accustomed to feats of agility and strength could have safely made that dangerous escape along the face of the cliff that rose straight up from the shore. But Gaston was well trained, and the boyish pranks that used to bring him into dire disgrace now helped to save his life. Thus, when the order came, written in the rude hand he had taught Yvonne long ago, "Pull up the thread which Blanchette will bring at midnight. Watch for a light in the bay. Then come down, and St. Barbe protect you," he was ready; for the tiny file of watch-spring, brought by the bird, had secretly done its work, and several bars were loose. He knew that the attempt might cost him his life, but was willing to gain liberty even at that price; for imprisonment seemed worse than death to his impatient spirit. The jailer went his last round, the great bell struck the appointed hour, and Gaston stood at the window, straining his eyes to catch the first ray of the promised light, when the soft whir of wings gladdened his ear, and Blanchette arrived, looking scared and wet and weary, for rain fell, the wind blew fitfully, and the poor bird was unused to such wild work as this. But obedient to its training, it flew to its master; and no angel could have been more welcome than the storm-beaten little creature as it nestled in his bosom, while he untangled the lengths of strong thread wound about one of its feet. He knew what to do, and tying a bit of the broken bar to one end, as a weight, he let it down, praying that no cruel gust would break or blow it away. In a moment a quick jerk at the thread bade him pull again. A cord came up, and when that was firmly secured, a second jerk was the signal for the last and most important haul. Up came the stout rope, knotted here and there to add safety and strength to the hands and feet that were to climb down that frail ladder, unless some cruel fate dashed the poor boy dead upon the rocks below. The rope was made fast to an iron staple inside, the bars were torn away, and Gaston crept through the narrow opening to perch on the ledge without, while Blanchette flew down to tell Yvonne he was coming.