. >> greg hampikian is a forensic scientist and director of idaho's innocence project. he also was working with the knox defense team. he says italian investigators did a good job processing the crime scene, collected excellent evidence, but clung to shakier evidence that proved their theory, a classic error, he says, 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 raffaello and her boss. when the dna is finally processed, it's not any of their suspects. so what do you do? what would you do? you let them go. >> as patrick lumumba was being released from jail, investigators analyzing the bloody evidence left at the crime scene found an entirely new suspect. his name? rudy guede, a known petty criminal from the ivory coast who fled to germany shortly after the murder. it turns out guede's handprint made in meredith kercher's own blood was found in the victim's room. guede's dna found inside the victim

dna expert greg hampikian says without the dna, there is no case. when you look at the dna that they claim is from meredith kercher, is at such a low level that it is below the detection that my lab, the fbi, that any lab that i know of uses. >> 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. earlier this year, the international committee to protect journalists sent a scathing letter to the president of italy complaining about mignini's tactics complaining in part that it is unacceptable that bloggers, journalists and writers on both sides of the atlantic should sensor themselves by staying away from subjects of public interest such as the mayor digit kercher case and the monster of florence killings because of prosecutor mignini's inability to the tolerate the scrutiny that comes with public office. >> do you have any dou

dna expert greg hampikian says without the dna, there is no case. when you look at the dna that they claim is from meredith kercher, is at such a low level that it is below the detection that my lab, the fbi, that any lab that i know of uses. >> 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. earlier this year, the international committee to protect journalists sent a scathing letter to the president of italy complaining about mignini's tactics complaining in part that it is unacceptable that bloggers, journalists and writers on both sides of the atlantic should censor themselves by staying away from subjects of public interest such as the mayor digit kercher case and the monster of florence killings because of prosecutor mignini's inability to the tolerate the scrutiny that comes with public office. >> do you have any dou

dna expert greg hampikian says without the dna, there is no case. when you look at the dna that they claim is from meredith kercher, is at such a low level that it is below the detection that my lab, the fbi, that any lab that i know of uses. >> 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. earlier this year, the international committee to protect journalists sent a scathing letter to the president of italy complaining about mignini's tactics complaining in part that it is unacceptable that bloggers, journalists and writers on both sides of the atlantic should sense score themselves by staying away from subjects of public interest such as the mayor digit kercher case and the monster of florence killings because of prosecutor mignini's inability to the tolerate the scrutiny that comes with public office. >> do you have an

greg hampikian, the director of the idaho innocence project. thanks for being with us. you said amanda knox and raffaele sollecito, her then-boyfriend, should have been released four years ago because the scientific evidence just wasn't there to support the prosecution's case. how so? >> i think we see the tragedy of misapplied science in that you've shown the kerchers -- they're now in a state of just utter despair because they were led down a certain road. but the dna that was done the day of the murder in that room where their daughter was killed was done perfectly well. i've watched all the videos and seen the collection and gone through all the analysis. all of that dna pointed to rudy guede, one person. and the tragedy here is that gut feeling, the gut feeling of the prosecutor trumped the science. and because of that, we have added more victims to this crime. you have three families devastated. and you have the first victim's family in this terrible state where they don't know who to trust now. so that's the problem when you refuse to give up a gut feeling when t

dna expert greg hampikian says even a single sam of raffaello's dna was found in a bloody and violent crime seen. >> if that's all terry schiavo a weak piece of evidence and inconsistent with every other piece of evidence in the case. >> twice a week this man makes the trip. he was able to move to italy so amanda would always have at least one member of the family here. >> it's about a half hour outside of perugia. >> he is hoping this summer he and amanda will move back to seattle but despite the evidence or lack of evidence being presented in the appeal, neither one appeals to be hopeful. >> how is she holding up? i heard you saying she doesn't want to be too hopeful but. >> no, she doesn't want to be too hopeful because it's difficult. things have gone our way in the past and we have been completely kicked in the teeth. so you don't want to -- you don't want to get hopeful. >> amanda knox is not allowed to talk to the press. her stepfather says she has no idea just how big this case has become. giuliano mignini knows all too well. the prosecutor who seemed nervous after our intervi

i want to continue our conversation with greg hampikian, dna expert from boise university, also chief of the idaho branch of the innocence project, friend of the knoxs, before we continue the conversation we had before the break, you just got a text from amanda knox's stepfather. >> yeah. saying the same thaing we're hearing, that there's movement and time to get into the courtroom. so everybody's on tender hooks. it's up to the jury and the judges at this point. >> six and two. i did want to ask -- we were talking about this earlier and i think our viewers will find this fascinating -- obviously this is happening in perugia, italy -- the knox family they don't speak italian. >> no. >> they're sitting in the courtroom watching essentially the fate of their daughter and not comprehending what's happening. >> no. there are some volunteers who help from time to time trying to translate, but you can imagine what happens in a courtroom if you have someone whispering next to you the whole time. i'm sure the judge wants them to keep that down. sometimes no one is translating. they try to fig