"Are you sure?"
"Dead sure!"
There was a short silence.
"What can we do now?"
"I don't know of anything we can do, unless it is to watch the rascal and see where he goes," answered the other. "The chances are that he's trying to get into the mine!"
"That shows that the fellow's a crook," Will contended. "He has full permission to enter the mine at any time he sees fit."
"Of course, he's a crook!" agreed George. "What would he be sneaking around here in the night for, if he wasn't engaged in some underhand game? You just wait until we get into the mine," the boy continued, "and we'll give him a ghost scare that'll hold him for a while."
As Ventner approached the little side door leading into the breaker, a light flashed in the window of the room which the boys had occupied, and directly Canfield's voice was heard asking:
"Who's there?"
"Now if he's on the square, he'll answer!" whispered Will.