Eighteen months after being released from an Italian prison, Amanda Knox could be extradited to Italy to face another trial. This after Italy’s highest court overturned her acquittal and ordered a re-trial. Knox and her ex-boyfriend, Raffaele Sollecito, were convicted of killing her 21-year-old roommate, Meredith Kercher in Knox and Kerchere’s shared flat. msnbc’s Thomas Roberts discussed the implications of the verdict Saturday morning with criminal defense attorney, Keith Sullivan and former prosecutor Karen Desoto.Sullivan explained how the case ended up back in the headlines. “One of the great, fascinating things about this case is the great divide between the American and the Italian system. So, in Italy, these cases go up for appeal automatically, as a matter of routine.” He goes on to say that whereas in America only about 5% of verdicts are overturned when going up on appeal, 95% of cases are overturned in the Italian court.With a new trial pending, evidence will be key in Knox and Sollecito’s new trial. Desoto points out that this might present a problem for the prosecution. “Remember the DNA has also been questioned. The appellate division has said that it’s useless.” With serious doubts cast on their DNA evidence, the prosecution would be going to trial with a much weaker case, leading many to question whether the case should go to trial at all.Another question surrounding the case is whether the U.S.’s double jeopardy law can be applied in this case. Double jeopardy occurs when there is an acquittal at the trial court level. However, in this case the trial court verdict was guilty, which was then overturned by the appellate court. Knox would not have to attend the trial, but if she is convicted and the high court confirms the finding, Knox would most likely have to return. Sullivan explains, “The United States has a treaty (with Italy) and I’m quite certain they would extradite.”