"I wish it had been a bit darker," Joe said. "We'll have to be careful when we get near the place."
"They may have some one posted on guard. Oh, well, we can look the place over when we get there."
At last they emerged on the hilltop that overlooked Willow River.
Below them lay the stream, with water shining in the moonlight. The deep banks of willow trees along the borders cast heavy shadows, and a light mist overhung the fields and hedges in the distance.
Gloomy and mysterious, the heavy bulk of the old mill rose from beside the river, near the shimmering silver streak of the mill race. Not a light shone from the building and it appeared absolutely deserted.
"Perhaps they've all moved away," suggested Joe.
"I noticed that the buildings were all boarded up when we were here last time. They haven't moved away, never fear."
Cautiously, the boys went down the slope.
They left the road and kept to the shadows of the trees, skirting the open space of meadow that lay between the grove and the mill itself. They did not speak, for the night was so calm and clear that sound carried for a considerable distance. They could hear the dull roar of the
