07 The Secret of the Caves (1964): Vintage Hardy Boys Book

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This book has the following ISBN:448089078

The date of the book listed represents the year printed on the inside of the book.

Attributed to Franklin W. Dixon. The characters were created by American writer Edward Stratemeyer, the founder of the book packaging firm Stratemeyer Syndicate. The books were written by several ghostwriters, most notably Leslie McFarlane, under the collective pseudonym Franklin W. Dixon.

While the book in our images represents the stellar condition you can expect, the copy you receive may be a different book than the one pictured, but the quality, edition, endpages, and cover art will be the same. Each book we send out will have clean readable pages, intact bindings and minimal wear, consistent with the book's age.

😊 We offer a no-questions-asked return policy. If you're not completely satisfied with your literary detective work, we'll gladly provide a replacement or refund.

This Blue Back Hardcover Book was published in English by Grosset & Dunlap.

The mystery deepens underground! In this seventh thrilling installment of the Hardy Boys series, teenage detectives Frank and Joe Hardy find themselves tackling a double mystery when they agree to help their father protect a coastal radar station from sabotage while searching for a missing college professor named Morgan Todd. The adventure begins when Chet Morton shows off his new metal detector and invites the Hardy boys and their friend Biff Hooper to explore the mysterious Honeycomb Caves. When they learn that strange lights and shooting have been reported in the area, the boys become even more determined to investigate. Their journey takes an unexpected turn when they encounter a hermit living in one of the caves who first invites them for breakfast, then chases them away—even firing a shotgun at Frank! As the boys dig deeper, they face escalating dangers—Chet’s metal detector mysteriously explodes, Biff is attacked, and the Hardy boys’ boathouse catches fire. The investigation leads them to the elegant Palais Paris antique shop, where they uncover an incredible secret: an underground passage connecting the shop to the caves, where a criminal organization is using a submarine to deliver supplies and building a device to interfere with the coastal radar station. In a heart-pounding climax, Frank and Joe must use all their detective skills to trap the criminals in the cave while state police close in from the other end. This action-packed 175-page revised edition from 1964 combines underwater adventure, secret passages, and clever detective work in one of the Hardy Boys’ most mysterious cases yet.