His progress was noiseless and he came at last, undetected, to the windows of the upper level. These, like several of the others he had passed at lower levels, were heavily barred, so that there was no possibility of his gaining ingress to the apartment where Tara was confined. Darkness hid the interior behind the first window that he approached. The second opened upon a lighted chamber where he could see a guard sleeping at his post outside a door. Here also was the top of the runway leading to the next level below. Passing still farther around the tower Gahan approached another window, but now he clung to that side of the tower which ended in a courtyard a hundred feet below and in a short time the light of Thuria would reach him. He realized that he must hasten and he prayed that behind
