"Mean is no name for it," the other Graham girl declared vengefully. "Haven't you any idea who did it?"
"None that is very tangible," Miss Ladd replied. "There was a mysterious prowler near our camp last evening, but we didn't catch sight of him. He threw a heavy stone into our bonfire and knocked the sparks and embers in every direction, but he kept himself hidden. A little later we heard a hideous call in the timbers, which we were pretty sure was intended to frighten us."
"That's strange," commented the older of the visitors.
"Maybe it's the ghost," suggested Olga with a faint smile.
"Ghost!" repeated several of the Camp Fire Girls in unison.
"I was just joking," the younger Graham girl explained hurriedly.
"Why did you suggest a ghost even as a joke?" inquired Katherine. The utterance of the word ghost, together with the probability that there was a neighborhood story behind it, forced upon her imagination an irrational explanation of the strange occurrences of the last evening.
"Oh, I didn't mean anything by it," Olga reassured, but her words seemed to come with a slightly forced unnaturalness. "But there has been some talk about a ghost around here, you know."
"Did anybody ever see it?" asked Hazel Edwards.
"Not that I know of," avowed Olga. "Of course, I don't believe in such things, but, then, you never can tell. It might be a half-witted person, and I'm sure I don't know which I'd rather meet after dark-a ghost or a crazy man."