New Orleans was once known as a city with good beignets and great jazz, but since Hurricane Katrina, the Crescent City is gaining notoriety for its murder rate - the highest in the nation. Last year, 162 people were murdered in New Orleans. Police made arrests in a third of those cases, but as of today, there has been just one conviction. The New Orleans Police Department remains woefully understaffed and overwhelmed by the violence. "We're operating with nothing and trying to combat an escalating problem," police lieutenant Mike Glasser tells correspondent Erin Moriarty on 48 HOURS MYSTERY: "Storm of Murder."