Teenaged Holly finds a strange coin which leads her and her friend Chris into strange adventures with the magical people of the Hollow Hills.
- ISBN10 0451142373
- ISBN13 9780451142375
- Publish Date 1 April 1986 (first published 27 October 1977)
- Publish Status Temporarily Withdrawn
- Out of Print 6 April 2017
- Publish Country US
- Publisher Penguin Putnam Inc
- Imprint Ace Books
- Format Paperback (US Trade)
- Language English