When alien creatures attack the Earth colony on the planet Plioctis, a small group of stranded children and their pets must depend for survival upon an unknown form of artificial intelligence that speaks to them through their computer Grandpa.
- ISBN10 0152004092
- ISBN13 9780152004095
- Publish Date 1 April 1990 (first published 10 October 1988)
- Publish Status Out of Print
- Out of Print 11 May 2011
- Publish Country US
- Imprint Houghton Mifflin Harcourt P
- Edition Us ed.
- Format Hardcover
- Pages 163
- Language English