so i did not take an opportunity. >> reporter: the morning after our interview with giuliano mignini,utor spots our camera, walks towards me, and off camera asks what i thought of the interview the night before, if i thought he was being truthful. clearly, mignini is now concerned. his case against amanda knox appears to be falling apart. the tabloid press still enamored with foxy knoxy is beginning to tell a different story. amanda and raffaello have appealed their convictions. the appeal trial is now under way, and a new judge and new jury have been seated. knox rarely smiles now. raffaello sollecito has shaved his head. they have both been imprisoned for more than three years. knox's family says the couple who had met just eight days before the murder haven't communicated since their arrests. before the judge enters, knox mouths to rafaelle, are you okay? it was a tender moment in what would be a strange hearing. this morning amanda knox's attorneys are to cross-examine an old witness. he is the homeless man who lived in this park and originally told the court he saw amanda and rac

so i did not take an opportunity. >> reporter: the morning after our interview with giuliano mignini,or spots our camera, walks towards me, and off camera asks what i thought of the interview the night before, if i thought he was being truthful. clearly, mignini is now concerned. his case against amanda knox appears to be falling apart. the tabloid press still enamored with foxy knoxy is beginning to tell a different story. amanda and raffaello have appealed their convictions. the appeal trial is now under way and a new judge and new jury have been seated. knox rarely smiles now. raffaello sollecito has shaved his head. they have both been imprisoned for more than three years. knox's family says the couple who had met just eight days before the murder haven't communicated since their arrests. before the judge enters knox mouths to ras lanuf, are you okay. it was a tender moment in what would be a strange hearing. this morning amanda knox's attorneys are to cross-examine an old witness. he is the homeless man who lived in this park and originally told the court he saw amanda and raffae

as for giuliano mignini, he ha

edda, the prosecutor giuliano mignini and then surrounded by a phalanx of security officers amanda herself cloaked in an overcoat. in their final closing arguments knox's attorneys restate the core of their case. the dna evidence used to convict her in the murder of her roommate, meredith kercher, had been discredited and now amanda must be freed. next raffaele sollecito, amanda's former boyfriend and co-defendant insisting he never hurt anyone in his life. he shows the court a bracelet he has worn bearing the words "free amanda and raffaele." i have worn this for four years, he said. today it is finally the day to take it off. then the court falls silent as amanda knox rises to deliver her much anticipated statement. the intensity of the statement almost overwhelms her. she is shakes as she struggles to get the words out. >> okay. >> reporter: but as she continues she seems to gain a bit of confidence, the young woman described by her accusers as a she devil and shameless liar now taking one final opportunity to speak for herself. "i am paying with my life for something i haven't done," s

used to convict knox in the first trial either dismissed or discredited, besieged prosecutor giuliano mignini painted knox and her former boyfriend raffaele sollecito as cold blooded killers. the prosecutor told the jury that knox and sollecito avoided looking at gruesome photos he presented in court of the victim, meredith kercher, suggesting that proved they must be killers. curt knox is amanda's father. >> he really was focused on everything but physical evidence. the physical evidence, at least from my point of view, would show that they had no participation in this horrific crime. >> reporter: knox and sollecito were convicted in 2009 of killing meredith kercher. the prosecutor claimed it was a group sex game gone bad. but earlier this year, a team of forensic experts concluded that the d.n.a. evidence linking knox and sollecito to the scene didn't meet any standard of reliability. bob graham is an investigative reporter and a cbs news consultant. >> absolutely zero evidence to link them, be it circumstantial evidence, forensic evidence, witness evidence. there's zero. >> reporter: but d

because no matter how many times the evidence pointed somewhere else, this prosecutor, giuliano migninihe information and bend it into his theory of the case. he still sticks with that. >> nina, you agree with that. >> yeah, i agree with that, absolutely. they made it -- i wouldn't go so far as he does blaming it entirely on the prosecutor. it was -- the police were making the original errors, i think. there were investigators who took a look at this girl and just took a disliking to her. she didn't seem right to them forreasons. >> there's a mistranslation, cultural misunderstanding. the police work was that there was something odd about this young woman. the prosecutor has his own issues because he sees a satanic rite, two nights after halloween, you know, he's superstitious and so this sort of culmination of things, but absolutely they made a hasty judgment. they needed it because it's a college town. perugia is many things, it's filled with art, a beautiful medieval city, but it's a college town. there are 40,000 students there. the economy depends on these people, and they were fle