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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 invention. When Joe is kidnapped, this incident starts Frank of on a chase that could end disastrously for him and his pals.
It takes about 3 Hours and 34 minutes on average for a reader to read What Happened At Midnight? (Hardy Boys, Book 10). This is based on the average reading speed of 250 Words per minute.
The recommended reading level for What Happened At Midnight? (Hardy Boys, Book 10) is 4th Grade through 7th Grade .
The Lexile score for What Happened At Midnight? (Hardy Boys, Book 10) is 690.
What Happened At Midnight? (Hardy Boys, Book 10) is 192 pages long.
What Happened At Midnight? (Hardy Boys, Book 10) is book #10 in the The Hardy Boys Book Series and comes after The Great Airport Mystery (Hardy Boys, Book 9) and comes before While The Clock Ticked (Hardy Boys, Book 11)
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