We went on quickly—so quickly, that Laura was breathless by the time we were nearly through the plantation, and within sight of the lighted windows.

I waited a moment to give her breathing-time. Just as we were about to proceed she stopped me again, and signed to me with her hand to listen once more. We both heard distinctly a long, heavy sigh behind us, in the black depths of the trees.

“Who’s there?” I called out.

There was no answer.

“Who’s there?” I repeated.

An instant of silence followed, and then we heard the light fall of the footsteps again, fainter and fainter—sinking away into the darkness—sinking, sinking, sinking—till they were lost in the silence.

We hurried out from the trees to the open lawn beyond, crossed it rapidly; and without another word passing between us, reached the house.

In the light of the hall-lamp Laura looked at me, with white cheeks and startled eyes.

“I am half dead with fear,” she said. “Who could it have been?”

“We will try to guess to-morrow,” I replied. “In the meantime say nothing to any one of what we have heard and seen.”