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|| An assignment form their famous detective father to track down a ring of credit-card counterfeiters takes Frank and Joe Hardy on an exciting camping trip to the Rocky Mountains. But the cross-country trek with their pals Chet Morton and Biff Hooper is jinxed from the very first day. Strange happenings on a nearly impassable mountain lure Frank, Joe, Chet, and Biff to almost certain death before they discover the sinister reason for the danger on Vampire Trail.
|| Electronic reproduction. New York : Grosset & Dunlap, 1971. Requires OverDrive Read (file size: N/A KB) or Adobe Digital Editions (file size: 1704 KB) or Amazon Kindle (file size: N/A KB).