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Average rating3.3
Frank and Joe solve the mystery of the secret locked room in the spooky Dalrymple Mansion.
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Series
93 primary booksThe Hardy Boys is a 92-book series with 92 primary works first released in 1920 with contributions by Franklin W. Dixon, Jerrold Mundis, and Leslie H. Morrill.
Series
37 primary booksHardy-guttene is a 37-book series with 37 primary works first released in 1920 with contributions by Franklin W. Dixon, Jerrold Mundis, and Leslie H. Morrill.