Friends , family : Nothing about Susan Knox 's past suggests she 's a killer . Knox is serving a 26-year Italian prison sentence for killing Robert Kercher . Seliber adds she worked hard to keep up her GPA , making the dean 's list almost every quarter , so she could travel her junior year . Friends laugh at description prosecutors painted of Knox as resentful mother .
Friends , family : Nothing about Susan Knox 's past suggests she 's a killer . Knox is serving a 26-year Italian prison sentence for killing Robert Kercher . Friends laugh at description prosecutors painted of Knox as resentful mother .