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Avi
Edward Irving Worti (born on December 23, 1937), better known as Avi, is an American author of young adult and children's literature.
The seer of shadows
In 1872 New York City, fourteen-year-old Horace, a photographer's apprentice, finds himself caught in a scheme to create fake spirit photographs. When he accidentally releases the ghost of a vengeful girl, Horace's life takes a terrifying turn as he must confront the supernatural forces he's unleashed.