The next instant I gave a cry. The demon had made a sudden strain forward. Came a sharp word from the angel, and that Cerberus sank back again. But, though it sank back, that greenish fire in its eyes seemed to burn more fiercely, malevolently than before. "I think," I suggested, "that it would be a good plan to move back a little, back to a safer, a wider spot." "Move back? Never!" said Milton Rhodes. "We are here to move forward, not to go back. And, besides, the way widens out a little up there." I thought this utterly Quixotic; but, of course, if he didn't want to go back, I couldn't make him. And, if he wouldn't step back, neither would I. "Look," I said. "She is going to speak." The angel raised her left hand and motioned to us rather vehemently, at the same time uttering some word, or words. "No mistaking that, Bill," said Milton. "No; it is as plain as any words could be: "'Go back!'" "I am at a loss," said Rhodes, "how to answer." Again the angel raised her hand; but she did not motion this time, for the demon, with a blood-curdling sound, deep in its throat, strained forward again, and so suddenly and strongly that the angel was drawn forward a step or two. A sharp word, however, from the angel, and the monster settled back, as a dog does after straining at its leash. Once more the angel fixed her eyes upon us, or, rather, upon Milton Rhodes. Once more she raised her hand to sign to us to go back. But the sign was never given. At that instant, as the angel stood there with upraised hand, it happened. That sound came again, only more horrible than before, and the demon sprang at us. Caught thus off her guard, the angel was jerked, whirled forward. There was a wild, piercing cry, which rose to a scream; but the winged monster paid not the slightest heed. It was as though the thing had gone mad. The woman went down; in an instant, however, she was up again. She screamed at the demon, but it lunged toward us, flapping its great hideous wings and dragging her after it farther out onto the bridge. Her position now was one of peril scarcely less than our own. All this had passed, of course, with the quickness of thought. We could not fire, for fear of hitting the angel, right behind the demon; we could not move back; and we could not stand there and let this nightmare-monster come upon us. In a second or two, if nothing were done, it would do so. But what could we do? The thought of saving ourselves by killing the woman--and the chances were a hundred to one that we would kill her if we fired at the demon--was a horrible one. But to stand there and be sent over the edge was horrible, too. And the angel, in all probability, would be killed anyway; that she had not already been jerked from the rock was nothing less than a miracle. Why didn't she loose her hold on the leash?