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Synopsis
The galaxy is at war between the oxygen-breathing Terran Federation of worlds and the Ginzoes, chlorine-breathing aliens. An Earth ship is captured in battle by the Ginzoes, and its crew learns that the aliens have a newly developed catalyst. This can liberate chlorine from the sea - which, for the Ginzoes, would convert Terran worlds into suitable environments. The catalyst will be used unless the Terran Federation declares peace within fifty days. Fifty days to save Mankind ... or fifty days to doom!
Is Fifty Days to Doom appropriate for my child?
Suitable for most readers 13 and up.
A classic space opera featuring war between humans and alien species, with captured soldiers racing against a doomsday clock. Contains moderate combat violence and planetary-scale threat but no graphic content or strong language.
What to know going in
This book has moderate violence, no sexual content, and mild language. Content notes include genocide, captivity, and war.
Publisher ages reflect reading level; our rating reflects content maturity — they can differ.
Who'll love this
Fans of vintage sci-fi will enjoy the high-stakes race against time to prevent Earth's destruction by an alien catalyst weapon.