Read "The Secret of the Old Mill" by Franklin W. Dixon online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
Frank Hardy reduced the speed of the motorboat, because he realized the dangers that lurked in the fog.
Almost any moment they might crash into another boat in the bay. Even worse, they might be so far out of their course that they would pile up on one of the rocky shores.