A cave painting of a Vulcan convinces Spock to journey five thousand years into the past through a time portal on the planet Gateway to reclaim his son.
- ISBN10 0671038516
- ISBN13 9780671038519
- Publish Date 1 August 1999 (first published 1 January 1984)
- Publish Status Out of Stock
- Publish Country US
- Imprint Simon & Schuster
- Format Paperback
- Pages 191
- Language English