After an unfortunate murder two telepathic children, members of a primitive civilization, are led to escape by a friendly, unseen voice.
- ISBN10 0140318739
- ISBN13 9780140318739
- Publish Date 30 May 1985 (first published 17 April 1975)
- Publish Status Out of Print
- Out of Print 6 December 1991
- Publish Country GB
- Imprint Puffin Books
- Edition New edition
- Format Paperback
- Pages 240
- Language English