内容简介：Having bound Flora Francatelli to the chair, in the manner just described, the three nuns fell back a few paces, and the wretched girl felt the floor giving way under her. A dreadful scream burst from her lips as slowly, slowly the chair sank down while the working of hidden machinery in the roof, and the steady, monotonous revolution of wheels, sounded with ominous din upon her ears. An ice-stream seemed to pour over her soul.