your own verdict, guilty, innocent, or a third choice, not proven. the first clue was found on a dead boy's tennis shoes. e victim was eric middlebrooks. his body left here in a rainy alley. a foster child who rode his bicycle away one night on an errand and was dead by dawn. detective bob buffington saw something red stuck to eric's tennis shoe. >> and i noticed in the flap of the edge of this shoe this tuft of what to me appeared to be wool. and that was it. we could find no other evidence. >> back at homicide, buffington showed the fibers to his superiors. >> the lieutenant made a big joke out of it and told the rest of the squad that if i went over to the lieutenant's house and