biologist at boise state university and director of the idaho's innocence project and also 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 raffaele 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