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3 hours, 42 minutes • first pub 1931 (view editions) user-added
ISBN/UID: None
Format: Audio
Language: English
Publisher: Not specified
Edition Pub Date: Not specified
Description
Frank and Joe race against time to retrieve a scientist's top-secret invention before thieves get their hands on it. But the young detectives soon discover that they are involved in a mystery far greater in scope than just safeguarding the inventi...
Community Reviews
Content Warnings
3 hours, 42 minutes • first pub 1931 (view editions) user-added
ISBN/UID: None
Format: Audio
Language: English
Publisher: Not specified
Edition Pub Date: Not specified
Description
Frank and Joe race against time to retrieve a scientist's top-secret invention before thieves get their hands on it. But the young detectives soon discover that they are involved in a mystery far greater in scope than just safeguarding the inventi...
Community Reviews
Content Warnings