Accompanied by a wheelchair-bound private eye, a three-legged bloodhound, a Zen master-like woman, and an acorn flute, Ben and Sara venture into the forest to solve Grandma Daphnes' last riddle: How can you retrieve a treasure from the bottom of a pond without disturbing the water?
- ISBN10 0441015867
- ISBN13 9780441015863
- Publish Date 1 May 2008 (first published 1 October 2003)
- Publish Status Out of Print
- Out of Print 18 March 2014
- Publish Country US
- Publisher Penguin Putnam Inc
- Imprint Ace Books
- Format Paperback (US Mass Market)
- Pages 306
- Language English