sheriff's investigators revealed their theory of a bizarre sequence of events in which a man killed his wife to keep her from telling that he had murdered her former lover, a young man who disappeared from a Bossier City restaurant and later turned up dead in the Red River. Robert Cole, jailed since Jan. 6 for the grisly murder of his wife, Terresa, was charged Wednesday afternoon with killing 18-year-old Christopher Michael Pierce, who disappeared from a Taco Bell restaurant in Bossier City four years ago.
