What happens in Vegas-Could be Murder...The Las Vegas Mayoral race is heating up, and the incumbent doesn't have a prayer. Wealthy real estate speculator Nick Campenelli, who wants to legalize prostitution in Clark County, and former pastor Louis St. Louis, running on a 'clean-up-Vegas-by-getting-rid-of-the-whores' platform, are the front runners.They're also front runners on the suspect list for a string of murders. Kennedy O'Brien, four-year detective...