Excerpt - PITTSBURG, Calif. - A senior editor for PC World Magazine was shot to death in his home in what police described as a drug-related attack, authorities said Wednesday. Rex Farrance, 59, the San Francisco-based magazine's senior technical editor, was shot in the chest after four masked men broke into his home in a suburb east of the city around 9 p.m. Tuesday, Pittsburg police said. The assailants also pistol-whipped Farrance's wife, Lenore Vantosh-Farrance, 56, a registered nurse. She called 911, but the attackers fled before officers arrived. "We have substantial reason to believe that the victim and his...