Even picturesque and lavish towns like Malibu have their share of hidden tragedies.  ​What happened to Mitrice Richardson is one such mystery. The 24-year-old Californian beauty queen and recent college graduate went missing soon after dining at a popular celebrity-soaked Malibu restaurant.   Her questionable mental state and subsequent arrest, in one of America's wealthiest communities, kicked off a set of unimaginable tragedies.