An adventure featuring the crime-fighting Hardy Boys. The Hardy's guided the motorboat out into the ocean beyond the reef. Several times they saw sinister-looking fins knifing through the sea around them. Suddenly Frank's blood ran cold - water was starting to enter the hull.
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Book Description HarperCollins Publishers Limited 1974 Hardcover, 1974. Book Condition: Good. 159 pages. Bookseller Inventory # 566116