While exploring a church that is being razed in a Manchester slum, four English children are drawn into another world where they are compelled to combat the evil power which grips most of the land.
- ISBN10 0140303170
- ISBN13 9780140303179
- Publish Date August 1969 (first published 1 September 1965)
- Publish Status Unknown
- Out of Print 26 October 2004
- Publish Country GB
- Imprint Penguin Books Ltd
- Format Paperback
- Pages 176
- Language English