Stane shook his head. "I haven't the slightest notion, but whoever it was watched the cabin for a little time. He stood there on the edge of the wood, as the deeper impression in the snow shows."
"Perhaps the owner whose palace we have usurped has returned."
Stane again shook his head. "No! He would have made himself known, and besides he would most certainly have had a team of dogs with him. Whoever the visitor was he came down the lake and he went back that way."
"It is very mysterious," said Helen, looking up the frozen waste of the lake.
"Yes," answered Stane, "but rather reassuring. We are not quite alone in this wilderness. There must be a camp somewhere in the neighbourhood, but whether of white men or of Indians one can only guess."
"And which do you guess?" asked Helen quickly.
"Indians, I should say, for a white man would have given us a call."
"And if Indians, they may be friendly or otherwise?"
"Yes."
"Then," she said, with a little laugh, "we shall have to keep our eyes lifting and bolt the door o' nights!"