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. >> raffaele had never met rudy guede. never set eyes on him. didn't know anything about him. >> within days guede was picked up by police in germany. >> the initial assumption when rudy guede was extradited back to italy, it was always going to be over. everything pointed to him. he even had a motive. >> he had stated in a conversation to the police that, yes, i was there. yeah, i know who amanda is and, no, she wasn't there, and, no, i have never met her boyfriend before. we're all sitting there going, hallelujah. >> they basically just throw lumumba back out on the street.