
Sci-FiMysteryYoung Adult
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In an alternate history of New York, three kids try to solve a modern-world puzzle and complete a treasure hunt laid into the streets and buildings of the city.
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Editions
4 editions- Other · English · 2018Shadow CipherHarperCollins Publishers · 9781536438963
- Other · English · 2018Turtleback Books · 496 pages · 9780606413909
- Other · English · 2017476 pages · 9780062306937
- Other · English · 2017Shadow CipherBound to Stay Bound Books · 476 pages · 9798855116250
PuzzlesJuvenile fictionFriendshipBrothers and sistersFictionAdventure and adventurersChildren's fictionMystery and detective stories













