It was a horrific crime, even by the big-city standards of Houston. On the afternoon of July 18, 2003, two people entered a home in the manicured suburb of Clear Lake and shot to death the four young people inside. There were no obvious suspects. No arrests were made.
Police worked the case for three years. They interviewed dozens of the victims' friends and acquaintances, many of whom were classmates at Clear Lake High School. They fielded hundreds of tips, none of which panned out.