Far across the lake a heavy train rumbled, and its engine blew a long blast for Annandale. I felt at that instant the unreality of the day's events, with their culmination in this strange interview on the height above the lake. Never, I thought, had man parleyed with woman on so extraordinary a business. In the brief silence, while the whistle's echoes rang round the shore, I drew away from the bench that had stood like a barricade between us and walked toward her. I did not believe in her; she had flaunted her shameful trickery in my face; and yet I felt her spell upon me as through the dusk I realized anew her splendid height, the faint disclosure of her noble head and felt the glory of her dark eyes. Verily, a lady of shadows, moonlight and dreams, whom it befitted well to walk forth at night, bent upon plots and mischief, and compelling love in such foolish hearts as mine. She did not draw away, but stood quietly, with her head uplifted, a light scarf caught about her shoulders, and on her head a round sailors cap, tipped away from her face. "You must go back; I must see you safely to St. Agatha's," I said. She turned, drawing the scarf close under her throat with a quick gesture, as though about to go. She laughed with more honest glee than I had known in her before, and I forgot her duplicity, forgot the bold game she was playing, and the consequences to which it must lead; my pulses bounded when a bit of her scarf touched my hand as she flung a loose end over her shoulder. "My dear Mr. Donovan, you propose the impossible! We are foes, you must remember, and I can not accept your escort." "But I have a guard about the house; you are likely to get into trouble if you try to pass through. I must ask you to remember our pledge, that you are not to vex Miss Pat unnecessarily in this affair. To rouse her in the night would only add to her alarm. She has had enough to worry her already. And I rather imagine," I added bitterly, "that you don't propose killing her with your own hands." "No; do give me credit for that!" she mocked. "But I shall not disturb your guards, and I shall not distress Aunt Pat by making a row in the garden trying to run your pickets. I want you to stay here five minutes--count them honestly--until I have had time to get back in my own fashion. Is it a bargain?" She put out her hand as she turned away--her left hand. As my fingers closed upon it an instant the emerald ring touched my palm. "I should think you would not wear that ring," I said, detaining her hand, "it is too like hers; it is as though you were plighted to her by it." "Yes; it is like her own; she gave it--" She choked and caught her breath sharply and her hand flew to her face. "She gave it to my mother, long ago," she said, and ran away down the path toward the school. A bit of gravel loosened by her step slipped after her to a new resting-place; then silence and the night closed upon her.