The sixteen year old son of a man who worked on Sam Donaldson's ranch in New Mexico was convicted on two counts of murder and one count of voluntary manslaughter after shooting and killing his father, stepmother and stepsister in 2004. According to reports, Cody Posey had been abused by his father his entire life. It was actually Sam Donaldson who called authorities after coming across the murder scene and hidden bodies. There's more about the trial, including footage, which you can see here.