TODAY | March 24, 2013
>>> amanda knox has been back in the united states for more than a year now after an italian court overturned her murder conviction in the death of her roommate. her legal drama overseas, though, may not be over. here's more now from duncan.
>> reporter: tomorrow, amanda knox will find out if she must once again sit in an italian courtroom or whether her long-running case is finally closed for good. it's more than a year and a half since the 25-year-old was able to return home a free woman.
>> i'm really overwhelmed right now.
>> reporter: after four years in prison, she and boyfriend raffaele sollecito had their convictions overturned. but now, italian's highest court is set to decide if their conviction should be overturned.
>> the prosecutors obviously are upset with the acquittal, and they're going to the supreme court to have it reviewed to say the appellate court got it wrong and that the guilty charge in the trial court was correct and that should stand.
>> reporter: knox was convicted of sexually assaulting and murdering meredith kercher at the hillside villa the two women shared. prosecutors claimed knox killed the student in an attack fuelled by sex, drink, drugs and jealousy. but her defense says the police bungled the investigation.
>> i don't think the verdict is going to be overturned, only based on the fact it was a 100-page report and a lot of the problems was with the dna, and that is something that obviously can't be reversed once you mess up in a dna case, obviously, there's nothing a new trial can do. that evidence will remain the same.
>> reporter: unlike the media circus that accompanied the first two trials, tomorrow's ruling will happen behind closed doors . neither knox for sollecito is likely to attend, but both will be waiting to hear if the courtroom drama is finally over.