Three boys set out on a secret mission to penetrate the City of the Tripods and learn more about these strange beings that rule the earth.
- ISBN10 0606027181
- ISBN13 9780606027182
- Publish Date 30 October 1988 (first published 1 October 1967)
- Publish Status Out of Print
- Out of Print 1 September 2015
- Publish Country US
- Imprint Turtleback Books
- Edition Turtleback School & Library, R ed.
- Format Hardcover (Library Binding)
- Pages 218
- Language English