Charles Ng, the man convicted of murdering six men, three women and two infant boys in a gruesome killing spree in Northern California 14 years ago, was sentenced to death Wednesday. "It will never bring us closure, but it will bring justice," the tearful mother of one of Ng's victims told the judge. The sentencing marked the end of one of the longest and costliest murder prosecutions in state history--about $14 million so far. Orange County Judge John J. Ryan condemned the Hong Kong emigre and former Marine to die by lethal injection. Ng, 38, will be transported to San Quentin State Prison, where he will await execution pending appeals that are likely to take years.