Title: The shadow cipher
Description: 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.
Subjects: Puzzles, Juvenile fiction, Friendship, Brothers and sisters, Fiction, Adventure and adventurers, Children's fiction, Mystery and detective stories, Adventure and adventurers, fiction, New york (n.y.), fiction, Science fiction, New York Times reviewed
Places: New York (N.Y.)