Two children uncover the key to Grandmother's secret on a dream adventure in South America.
- ISBN10 039565565X
- ISBN13 9780395655658
- Publish Date 31 December 1993 (first published 1 May 1993)
- Publish Status Out of Print
- Out of Print 21 June 2021
- Publish Country US
- Publisher Houghton Mifflin
- Imprint Houghton Mifflin (Trade)
- Edition American ed.
- Format Hardcover
- Language English