Ernie uses her eagle eye to solve the mystery of the Maple Street spy ring.
- ISBN10 0671740725
- ISBN13 9780671740726
- Publish Date 1 September 1991
- Publish Status Out of Print
- Out of Print 12 November 2014
- Publish Country US
- Imprint Simon & Schuster
- Format Paperback (US Trade)
- Pages 73
- Language English