they belong to a man named rudy guede, an african immigrant's son. >> rudy guede was a drifter, originally from the ivory coast. he partied on the periphery of student life and was suspected of recent crimes around perugia. >> rudy had a history of knives and violence and break-in. >> he had blood, traces all over the crime scene, left his feces in the toilet. although that degrades dna very rapidly, there was dna out there as well. >> his blood and fingerprints are on her purse. and there are bloody hand prints and blood down the walls of her bedroom. he may have been surprised -- i don't know why he left. he didn't complete the act of rape. she had a tampon in at the time. maybe that's why. >> guede left for germany. he admitted to a friend he had been with meredith that night but claimed he didn't kill her. his connection with amanda, raffaele and meredith was thin at best. >> there's a question about whether amanda and meredith knew him. amanda said i had seen him, but i didn't know his name. >> never met rudy guede. never set eyes on him. didn't know anything about him. >> within days

it was rudy guede. this isn't a third person, this is a completely separate actor according to the defense and i think the record shows that. but in any case, rudy guede asks for a speedy trial and is convicted. why the prosecution continued with its two initial suspects when all of the dna is rudy guede's in that room, all of the dna that is found the day of the murder is either the victim or rudy guede. it is on her body, in her vagina. if this case had been worked what i'd say properly, look at the data, look at the evidence, amanda knox and raffaele sollecito were never charged. they were charged based on a gut feeling before the evidence was processed. once the evidence was processed, scientifically it pointed to one person who was tried and convicted. i think a lot of people forget that's how this happened. so the knife evidence that the state used to prosecute amanda knox we've questioned from the beginning it's clear to me it was probably a contaminant. it's very low level, they used evidence th

guede's dna found inside the victim's body in her vagina.clothing, on his purse, his feces even found on used toilet paper left near an unflushed toilet down the hall and something else. guede didn't even know raffaele and had only met amanda a few times with neighbors. >> knowing all of that and when he finally got extradited from germany back down to italy, we thought thank god this is over. >> it wasn't. prosecutor mignini simply swapped suspects. amanda knox, raffaele sollecito, and now rudy guede had come to meredith kercher hoping to include her in an orgy. when kercher refused, they pulled out knives and killed her. giuliano would stick to his instincts despite forensic evidence. you were fixated, according to the defense, on amanda knox and raffaele sollecito and kept imagining new scenarios that made these two people guilty. >> translator: no, absolutely not. i did what i did because i was convinced given the evidence that had been gathered that they were responsible. i am absolutely convinced. >> rudy guede, the african drifter, wa

also inside meredith's naked body, rudy guede's dna.olice explain the fact that at the crime scene there is not one trace of dna from amanda knox. the prosecutors will say she must have cleaned hers off. >> it's impossible to see dna, much less identify whose dna it is. >> the trial will continue for 318 days. on december 5, 2009, two years after the murder, amanda knox is called back into the courtroom and hears the word colpevole. guilty? >> colpevole. and it was a roar in the courtroom. people exclaiming. my mom and my sister crying. and i couldn't breathe. everything that i thought i knew about the way justice and life worked was gone. >> outside, italians rejoice. >> amanda knox was found guilty. >> as the verdict was read amanda knox and her family began to sob. >> her sense 26 yesentence /* h years in prison. >> capanne prison, 500 prisoners. in a tiny room, a 22-year-old american girl sentenced to 26 years has only a small window onto a cypress tree. she says day and night she could hear women wailing in their cells. you wrote,

for the murder. >> rudy guede's dna is all over the place.hat crime scene for two months and they were not able to find amanda knox's dna. >> reporter: still guede could actually walk free at the very moment authorities are trying to put knox back in prison. >> with good behavior, he is eligible and will probably receive daytime release this year. >> reporter: if italy does seek knox's extradition legal experts believe she will have a tough time fighting it unless u.s. thorities make the unusual move of resisting italy and a treaty americans rely on to work both ways. >> i understand that there is a legal process we go through here depending on whether there's an extradition treaty or not. >> reporter: until then amanda knox will remain a woman caught between two countries, convicted of murder in italy while free here at home. for "good morning america," neal karlinsky, abc news, seattle. >> such an interesting story and so many questions about whether she will be dragged back to italy. we will, of course, continue to cover it here on abc new

for the murder. >> rudy guede's dna is all over the place.crime scene for two months and they were not able to find amanda knox's dna. >> reporter: still guede could actually walk free at the very moment authorities are trying to put knox back in prison. >> with good behavior, he is eligible and will probably receive daytime release this year. >> reporter: if italy does seek knox's extradition legal experts believe she will have a tough time fighting it unless u.s. authorities make the unusual move of resisting italy and a treaty americans rely on to work both ways. >> i understand that there is a legal process we go through here depending on whether there's an extradition treaty or not. >> reporter: until then amanda knox will remain a woman caught between two countries, convicted of murder in italy while free here at home. for "good morning america," neal karlinsky, abc news, seattle. >> such an interesting story and so many questions about whether she will be dragged back to italy. we will, of course, continue to cover it here on abc news.