Read "The Missing Chums" by Franklin W. Dixon online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
In the meantime, what of Chet Morton and Biff Hooper?
When they took the wrong turn in the trail it was some time before they realized that the Hardy boys were not running along before them. They were blundering along through the undergrowth, in complete darkness, trusting to their chums to guide them through, when finally Chet stopped, panting.