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Akata witch (original 2011; edition 2011)
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Wikipedia in English
Amazon.com Product Description (ISBN 0670011967, Hardcover)Twelve-year-old Sunny lives in Nigeria, but she was born American. Her features are African, but she's albino. She's a terrific athlete, but can't go out into the sun to play soccer. There seems to be no place where she fits. And then she discovers something amazing - she is a "free agent," with latent magical power. Soon she's part of a quartet of magic students, studying the visible and invisible, learning to change reality. But will it be enough to help them when they are asked to catch a career criminal who knows magic too?
(retrieved from Amazon Mon, 30 Sep 2013 13:24:17 -0400)
Twelve-year-old Sunny Nwazue, an American-born albino child of Nigerian parents, moves with her family back to Nigeria, where she learns that she has latent magical powers which she and three similarly gifted friends use to catch a serial killer.
(summary from another edition)