Having run into a ruthless plot to seize control of the mining colony they are visiting on Venus, the Grahams take refuge with underground dwellers who have been secretly practicing Christianity.
- ISBN10 0840792387
- ISBN13 9780840792389
- Publish Date 1 November 1994
- Publish Status Out of Print
- Out of Print 14 June 2021
- Publish Country US
- Imprint Thomas Nelson Publishers
- Format Paperback (US Trade)
- Pages 161
- Language English