This gripping short story from the golden age of science fiction is a must-read for Simak fans, or for anyone looking for an out-of-this-world adventure. As the denizens of Earth face an invasion from inhabitants of another dimension, the future of the planet hangs in the balance. Will anyone be able to stop the marauding attackers and save the human race?
- National Poetry Month
- Mine a Good Book
- 250th Anniversary of the American Revolution
- Earth Day Reads
- 2025 Libby Book Award Winners and Runners Up
- How Does Your Garden Grow?
- Always Available Ebooks: Kids Classics
- Always Available Ebooks: Classic Fiction
- Always Available Ebooks: Classic Nonfiction
- Great reads without the wait!
- Adapted for Young Readers
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- National Poetry Month
- Mine a Good Book
- 250th Anniversary of the American Revolution
- Earth Day Reads
- 2025 Libby Book Award Winners and Runners Up
- How Does Your Garden Grow?
- Always Available Audiobooks
- Great reads without the wait!
- Everyone Reads: Spanish Titles for Young Readers
- Adapted for Young Readers
- See all audiobooks collections