A banker who has been receiving threatening notes enlists the help of the Hardy boys. Before long, the young sleuths find themselves entangled in the investigation of a notorious band of thieves.
- ISBN10 0448089114
- ISBN13 9780448089119
- Publish Date 1 January 1932
- Publish Status Active
- Publish Country US
- Imprint Grosset & Dunlap
- Format Hardcover
- Pages 192
- Language English
- URL https://penguinrandomhouse.com/books/isbn/9780448089119