says they saw the couple near the home the night of the murder. another one saying they heard a scream. another one also hearing footsteps running in different directions, but magnini would also present scientific evidence, he said, that proves amanda and rafaelle s gift. rafaelle s skin cells on meredith s bra clamp collected 46 days after police first showed up at the murder. and what one expert called an inconclusive sample of what could have been meredith s dna found on a knife collected at rafaelle s apartment. the handle of the knife amanda s dna. according to prosecutor magnini, because the victim had never been to rafaelle s apartment, the knife must be the murder weapon. tests for blood on the knife turned up negative. prosecutors explained it s because the knife had been wiped
clean. forensic expert greg says finding dna but no blood makes it highly unlikely the knife was used in a bloody murder. he also says it s surprising the prosecutor was even allowed to admit such a small, unexplainable sample as evidence. would this have made it into a u.s. court? i don t think this would have made it on to a u.s. lab report. reporter: what also made it into court was amanda s so-called confession. in a quirk of italian law the confession was thrown out of the criminal case against knox, but jurors heard it anyway as part of a civil case being tried simultaneously. in court jurors heard mignin s evidence of guilt, and then when they went home each night, they heard the news from a tabloid press gone wild. sensational headlines about the murder suspect dubbed foxy knoxy were rampant. completely fabricated stories of how amanda knox engaged in
reporter: the morning after our interview with guilianio mignini the prosecutor 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 enaturalered with foxy knoxy is beginning to tell a different story. amanda and rafaelle have appealed their conviction. the appeal process is now underway, and a new judge and new jury have been seated. knox, rarely smiles now. rafaelle 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
mignini knows all too well. the prosecutor who repeatedly told us he has nothing to be nervous about is again on the defensive. already found guilty of abuse of his office in the monster of florence case, he is now being accused of harassing journalists who criticize his investigation against amanda knox. last month, the international committee to protect journalists sent a scathing letter to the president italy, complaining about mignini s tactics saying in part, it is unacceptable journalists, bloggers, writers on both sides of the atlantic sudden censor themselves by staying away from subjects of public interests such as the meredith kimpber case and monster of florence killing because of prosecutor migninin s inability to tolerate the scrutiny that comes with public office. reporter: do you have any doubt, any doubt in your mind that you convicted the wrong
night. he could not have been involved. and director of idaho s innocence project. he also was working with the knox defense team. he says italian investors did a good job processing the crime scene, collected excellent evidence, but clung to shakier evidence that proved their theory. a classic error. a prosecutor who trusted his gut feeling instead of the science that at that time was pointing to another suspect. they didn t like the way amanda behaved, whatever that means, and so they wanted to investigate her and rafaelle and her boss. when the dna is finally processed, it s not any of their