FORT WORTH -- Claudia Hidic was desperate for money. On June 24, the 17-year-old former Trinity High School student began hounding a 43-year-old Overton Park West resident for cash, selling him an HK .40-caliber pistol for $100 and giving him two laptops as collateral for an additional $100. She told him that she needed the money to get her boyfriend out of jail. The teen returned a few days later asking for $600, but the man refused to give it to her. As he drove home from his job in Dallas on the afternoon of June 28, the resident got...