Spark by John Twelve Hawks Doubleday, Random House, $25.95, 301 pages, ISBN 978-0-385-53867-1 My Oxford Dictionary defines the word dystopia as an imaginary place where everything is as bad as it can be . . . which makes it the exact opposite of utopia, and an ideal descriptor for end-of-the-world type literature. Lately, with the popularity of works like The Hunger Games and Gotham, dystopian novels, movies and TV