Encountering a fireball which turns out to be a crossing point between their world and another one on a different probability track, two boys, one English and one American, face Indians, Vikings and Aztecs in their attempts to reach California.

 

Published
1983
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Author

John Christopher

Christoper Samuel Youd, a.k.a. John Christopher (1922-2012), was a British science fiction author. He is best known for The Tripods trilogy.