his back turned to them, and so deeply was his attention
engaged that he was unconscious of their presence.

"He is watching the house," said the girl. "Why is he doing
that?"

"I think it's Fred," whispered the man. "He's afraid to go
for the water. That's as far as he's gone." He was about to
move forward when from the oak tree there came a low whistle.
The girl and the man stood silent and motionless. But they
knew it was useless; that they had been overheard. A voice
spoke cautiously.

"That you?" it asked.

With the idea only of gaining time, the young man responded
promptly and truthfully. "Yes," he whispered.

"Keep to the right of the house," commanded the voice.

The young man seized Miss Forbes by the wrist and moving to
the right drew her quickly with him. He did not stop until
they had turned the corner of the building, and were once more
hidden by the darkness.

"The plot thickens," he said. "I take it that that fellow is
a keeper, or watchman. He spoke as though it were natural
there should be another man in the grounds, so there's
probably two of them, either to keep Carey in, or to keep
trespassers out. Now, I think I'll go back and tell him that