CHARLESTON, W.Va. -- A New York Times best-selling author of books for teens will speak at this year's West Virginia Book Festival.Tamora Pierce, who authored her first book in 1983, has since written 28 fantasy novels for teens. The most recent is "Mastiff.""Pierce began writing in sixth grade to escape from her parents' disintegrating marriage," according to a West Virginia Book Festival news release. "A fan of heroic fantasy, she began writing stories that featured fearless, bold, female protagonists because those characters were lacking in the books she loved to read."Pierce will autograph books after she speaks at 4 p.m. Oct. 13 at the Charleston Civic Center.The 12th annual West Virginia Book Festival will be held Oct. 13 and 14. The two-day event celebrates books and reading and offers something for all age groups. A variety of authors will attend and participate in book signings, readings, workshops and panel discussions. Activities for children include special programs, and admission to the festival is free.