Tuesday passed without event. Tuesday night Josie was at her post again, her eyes fixed on the dim light that shone from Mr. Cragg's room. Had she been able to see through the walls of the cottage she would have found the old man seated in his private apartment opposite his daughter. Could she have heard their conversation—the low, continuous hum of Old Swallowtail's voice, broken only by an occasional question from Nan—she would surely have been astonished. Nan was not much astonished, save at the fact that her father had at last voluntarily confided to her the strange story of his life, a life hitherto unknown to her. She was not easily surprised, but she was greatly impressed, and when he finally rose from his chair and went out into the night Nan sat in meditation for some time before she followed him. Ingua had long been asleep.
Josie, lurking outside, had not expected Old Swallowtail to leave the premises unless he planned to run away. His delivery of counterfeit money to Ned Joselyn had been of too recent a date to render it necessary that he revisit his stone-yard for some time to come, she argued; yet to-night, at a little after eleven o'clock, she saw his shadow pass from the house and take the path to the bridge.
Josie followed. At the bridge Mr. Cragg turned westward and at once she surmised he was bound for his rocky five acres. The old man walked deliberately, never thinking to look behind him. He might not have observed anything suspicious had he turned, but a hundred feet behind him came Josie O'Gorman, deftly dodging from tree to bush to keep in the dark places by the wayside. And behind Josie silently moved a little man in gray homespun, whose form it would be difficult to distinguish even while he stood in the open. Josie, like the prey she stalked, was too occupied to look behind.
Old Swallowtail reached the stone-yard and climbed the fence. While he paused there Josie crept close and noticed a light which suddenly flashed from the hillside. It was a momentary flash and not very brilliant, but she knew it was a signal because the old man at once started forward. She let him lead on until he disappeared among the rocks and then she boldly followed. She knew now where the secret entrance to the cavern was located.
Threading her way cautiously through the maze of rocks the girl finally reached a slanting shelf beneath which she crept on hands and knees. At its farthest edge was a square door of solid oak, rather crudely constructed but thick and substantial. This door stood ajar.
Josie, crouching beside the secret entrance, wondered what she ought to do. The regular thumping, as of machinery, which she had heard once before, now began and continued without interruption. Here was an opportunity to catch the counterfeiters redhanded, but she was one small girl as opposed to a gang of desperate criminals.
"Oh, dear!" she whispered, half aloud, "I wish father had paid some attention to my telegram."
"He did," responded a soft voice beside her.
[CHAPTER XXV]
FATHER AND DAUGHTER
The girl would have screamed had not a hand been swiftly laid across her lips to stifle the sound. She tried to rise, but the shelf of rock beneath which she crouched prevented her. However, she struggled until an arm was passed firmly around her waist and a stern voice said warningly: