A super-genius in a small underground colony of survivors of nuclear war, eighteen-year-old Casey risks journeying back to the twentieth century to discover why the survivors are dying and how he can save them all.
- ISBN10 0060228520
- ISBN13 9780060228521
- Publish Date 1 January 1984
- Publish Status Out of Print
- Out of Print 4 May 2011
- Publish Country US
- Imprint HarperCollins Publishers
- Format Hardcover
- Pages 216
- Language English