On an Earth that has become an inhospitable wilderness, Toby and her friend Thaddeus find themselves lost in "the empty" with Orvis, an obsolete robot who is their only hope of protection and escape.
- ISBN10 0670811173
- ISBN13 9780670811175
- Publish Date 27 August 1987
- Publish Status Out of Print
- Out of Print 25 October 2004
- Publish Country GB
- Imprint Viking Books for Young Readers
- Format Hardcover
- Pages 186
- Language English