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Why it matters
Its elegant puzzle joins time travel to friendship and moral choice.
Opening the archive
Opening the archive
2010 selection · Young readers
A New York sixth grader receives mysterious notes that seem to predict events and demand a difficult act.
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Its elegant puzzle joins time travel to friendship and moral choice.
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You enjoy smart mysteries with science-fiction turns.
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Primary record
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John Newbery Medal — official winner recordOfficial record↗ (opens in a new tab)