Read "The House on the Cliff" by Franklin W. Dixon online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
The Hardy boys were astonished by this information. Their father, tapping a pencil quickly on the desk, leaned forward in his chair.
"You may have stumbled on some information of great value," he said to them quietly. "I need hardly tell you that it is best to keep it to yourself. If Ganny Snackley is operating in this vicinity it will be a great feather in our cap to catch him."