When Adam and his friends find a cube-shaped crystal while hiking, they find it makes their wishes come true. Unfortunately, the stone wants to be paid for what it gives.
- ISBN10 0340661216
- ISBN13 9780340661215
- Publish Date 1 July 1996 (first published 1 January 1996)
- Publish Status Out of Print
- Out of Print 7 May 2000
- Publish Country GB
- Publisher Hachette Children's Group
- Imprint Hodder Children's Books
- Format Paperback (A-Format (178x111 mm))
- Pages 128
- Language English