The Three Investigators, aided by their friend Allie, try to untangle the unusual circumstances surrounding an abandoned silver mine.
- ISBN10 0394844491
- ISBN13 9780394844497
- Publish Date 12 April 1980
- Publish Status Active
- Publish Country US
- Imprint Random House Books for Young Readers
- Edition Rh PB ed.
- Format Paperback (US Trade)
- Pages 145
- Language English