Sandwiched between the San Joaquin River and a trio of stunning national parks, the California city of Antioch seems like a peaceful part of the state's East Bay region, but in reality, it harbors an enormous underground criminal enterprise. You'd never know it based on the wealth of the neighborhood. In fact, residents fork out 93 percent more than the national average to live in the upscale area, with the median house costing $588,000, while renters pay a median $2,850 per month, according to Fly Homes. But the Golden State city's sunny exterior belies the shady underground weed trade that...