Nine-year-old Hal traces a frantic S.O.S. to a group of friendly space aliens held captive inside a mountain by the evil Ness who plan to take over the world.
- ISBN10 1680680129
- ISBN13 9781680680126
- Publish Date 12 February 2020 (first published 1 January 1975)
- Publish Status Active
- Imprint Ethan Ellenberg Literary Agency
- Format Paperback (US Trade)
- Pages 102
- Language English