"That it must be my office to prevent," answered the girl, with quiet resolution. "I have thought many times of some such thing as this, hoping as it seemed where no hope was, and Annette and I have taken counsel together. Leave it to me to see that all the Castle is filled with feasting and revelry. I will see that the mead which circulates tonight be so mingled with Annette's potion that it will work in the brains of the men till they forget all but rioting and sleep. For mine uncle and his saturnine guest, I have other means of keeping them in the great banqueting hall, far away from the lonely Tower where their prisoner lies languishing. They shall be so well served at the board this night, that no thought of aught beside the pleasure of the table shall enter to trouble their heads. And at ten of the clock, if I come not again to warn thee, cross fearlessly the great moat, and do as I have bid thee. But if thou hearest from the Castle wall the hooting of an owl thrice repeated like this" -- and the girl put her hands to her mouth, and gave forth so exact an mutation of an owl's note that Gaston started to hear it -- "thrice times thrice, so that there can be no mistake, then tarry here on this side; stir not till I come again. It will be a danger signal to tell that all is not well. But if at the hour of ten thou hast heard naught, then go forward, and fear not. Thy brother will be alone, and all men far away from the Tower. Take him, and go forth; and the Blessed Saints bless and protect you all."
She stretched forth her hand and placed it in his. There was a sudden sadness in her face. Gaston caught her hand and pressed it to his lips, but he had more to say than a simple word of parting.
"But I shall see thee again, sweet Constanza? Am I not thy true knight? Shall I not owe to thee a debt I know not how to pay? Thou wilt not send me forth without a word of promise of another meeting? When can I see thee again to tell thee how we have fared?"
"Thou must not dream of loitering here once thy object is secured," answered the girl, speaking very firmly and almost sternly, though there was a deep sadness in her eyes. "It will not be many hours ere they find their captive has escaped them, and they will rouse the whole country after you. Nay, to linger is certain death; it must not be thought of. In Bordeaux, and there alone, wilt thou be safe. It is thither that thou must fly, for thither alone will the Sieur de Navailles fear to follow you. For me, I must remain here, as I have done these many years. It will not be worse than it hath ever been."
"And thinkest thou that I will leave thee thus to languish after thou hast restored to me my brother?" asked Gaston hotly. "Nay, lady, think not that of thine own true knight! I will come again. I vow it! First will I to the English King, and tell in his ears a tale which shall arouse all his royal wrath. And then will I come again. It may not be this year, but it shall be ere long. I will come to claim mine own; and all that is mine shall be thine. Sweet Lady, wouldst thou look coldly upon me did I come with banners unfurled and men in arms against him thou callest thine uncle? For the lands he holds were ours once, and the English King has promised that they shall one day be restored, as they should have been long ago had not this usurper kept his iron clutch upon them in defiance of his feudal lord. Lady, sweet Constanza, tell me that thou wilt not call me thy foe if I come as a foe to the Lord of Navailles!"
"Methinks thou couldst never be my foe," answered Constanza in a low voice, pressing her hands closely together; "and though he be mine uncle, and though he has given me a home beneath his roof, he has made it to me an abode of terror, and I know that he is feared and hated far and wide, and that his evil deeds are such that none may trust or love him. I would not show ingratitude for what he hath done for me; but he has been paid many times over. He has had all my jewels, and of these many were all but priceless; and he gives me but the food I eat and the raiment I wear. I should bless the day that set me free from this life beneath his roof. There be moments when I say in mine heart that I cannot live longer in such an evil place -- when I have no heart left and no hope."
"But thou wilt have hope now!" cried Gaston ardently. "Thou wilt know that I am coming to claim mine own, and with it this little hand, more precious to me than all else besides. Sweetest Constanza, tell me that I shall still find thee as thou art when I come to claim thee! I shall not come to find thee the bride of another?"
He could not see her face in the dimness, but he felt her hand flutter in his clasp like a bird in the hand of one who has tamed it, and whom it trusts and loves. The next moment his arm was about her slight figure, and her head drooped for a moment upon his shoulder.
"I shall be waiting," she whispered, scarce audibly. "How could I love another, when thou hast called thyself my knight?"
He pressed a passionate kiss upon her brow.