Linda Sue Park was born in Urbana, Illinois on March 25, 1960. She received a B.A. in English from Stanford University. After graduating, she worked as a public-relations writer for a major oil company for two years. She obtained advanced degrees in literature from Trinity College, Dublin in Ireland and from the University of London. Before becoming a full-time author, she held numerous jobs including working for an advertising agency, teaching English as a second language to college students, and working as a food journalist. Her first book, Seesaw Girl, was published in 1999. Her other books include The Kite Fighters, Tap Dancing on the Roof: Sijo (Poems), and A Single Shard, which won the 2002 Newbery Medal. She also wrote Storm Warning, which is the ninth book in the 39 Clues series.