Following a prophecy of a former Alley resident, two boys discover an underground passage behind their houses.
- ISBN13 9780152049164
- Publish Date 1 August 2003 (first published 23 January 1973)
- Publish Status Active
- Publish Country US
- Imprint Houghton Mifflin
- Edition 1-Simul ed.
- Format Paperback
- Pages 244
- Language English