had learned. But Fenton Hardy himself brought up the question of counterfeit money when he told them that he had that afternoon received a telegram from Federal authorities asking him to further his investigations.
"They have evidence that more than ten thousand dollars in counterfeit money was put into circulation within the past three days," he told the boys. "The affair is going beyond all bounds."
"And Paul Blum is still silent?" asked Frank.
"Can't get a word out of him. I'm inclined to believe he doesn't know anything about the men who are at the head of the organization. I think he was only a tool, employed to get the money in circulation. But I wish you two lads would keep on the lookout for any clues. It will help me a lot if we can run these counterfeiters to earth. Then, besides, there is a big reward."
"We'll do our best," they promised.
And, secretly, they wondered what Fenton Hardy would think if he knew how much work they had already put on the case and how much evidence they had already gathered, tending to indicate that the old mill on the Willow River was in some way connected with the activities of the counterfeiting gang.
"If you can get anything definite in this
