Uptime, Downtime
When fourteen-year-old Karyn and her thirteen-year-old brother Mike discover that they can travel through time merely by concentrating on a specific place and date, they encounter other time travelers and have strange adventures while debating how to use their new talent.
GenresTime travelFictionScience fiction
242 pages
English edition · First published 1992 by Simon & Schuster Books for Young Readers · ISBN 9780671732745
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