While the rebel Ryland lies imprisoned on the moon by the Overone Guardians, his teenage children and their allies continue their fight on Old Earth against the Gorid and the hybrid creatures he has created.
- ISBN10 0064470253
- ISBN13 9780064470254
- Publish Date 1 April 1988 (first published 1 January 1986)
- Publish Status Out of Print
- Out of Print 13 April 2011
- Publish Country US
- Imprint HarperCollins Publishers
- Format Paperback (US Trade)
- Language English