| ISBN: | 9781101076255 |
| Publisher: | Grosset & Dunlap |
| Published: | 1 May, 1931 |
| Format: | eBook |
| Language: | English |
| Links | Penguin |
| Editions: |
32 other editions
of this product
|
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.
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