He looked like the total all-American kid as he pedaled his twenty-six-inch Schwinn with the apehanger handlebars up the residential suburban street, and that's just what he was: Todd Bowden, thirteen years old, five-feet-eight and a healthy one hundred and forty pounds, hair the color of ripe corn, blue eyes, white even teeth, lightly tanned skin marred by not eve the first shadow of adolescent acne.