Teen detectives Frank and Joe Hardy investigate a theft and hidden treasure at a mansion, clearing a friend's father.
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Teen detectives Frank and Joe Hardy investigate a theft and hidden treasure at a mansion, clearing a friend's father.
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A dying criminal confesses that his loot has been stored "in the tower." Both towers of the looted mansion are searched in vain. It remains for the Hardy boys to make an astonishing discovery that clears up the mystery and clears the name of a friend’s father.
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Book 1
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Book 4
Book 6
Book 7
Book 8
The Hardy Boys - What Happened at Midnight
No CoverBook 10
The Hardy Boys, The Hidden Harbor Mystery
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Book 16
Book 17
Book 22
Book 23
Book 24
Book 28
Book 29
The wailing siren mystery, (His Hardy boys mystery stories)
No CoverBook 30
Book 31
The hard boys the clue in the embers
No CoverBook 35
Book 37
Book 41
Book 43
Book 44
The Mystery of the Spiral Bridge
No CoverBook 45
Book 52
Book 55
Book 62
Hide-and-Sneak
No CoverBook 174
Book 182
What's Inside
will contain mild spoilers
Sexual content
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No romantic or sexual content depicted
Violence & gore
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No violent or gory scenes present
Profanity
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No profanity or strong language used
Substance use
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No substance use depicted
LGBTQ+ Rep.
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No LGBTQ+ characters or themes present
Religious content
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No religious content present
Magic & witchcraft
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No magic or witchcraft elements
Occult / demonology
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No occult or demonology content
Political content
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No political or ideological messaging
Self-harm / suicide
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No self-harm or suicide themes
Abuse & suffering
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No depictions of abuse or suffering
Other
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