ms. birgfeld? absolutely not. >> reporter: and then the defense went after jose tavera, who admitted he was so tight with coralluzzo he would have done just about anything for his friend. >> including burning a car to help him if he needed that done. >> i wouldn't do that. >> you wouldn't do that? >> no. >> that's the one thing you wouldn't do? >> yeah. >> reporter: meagan williams told the jury she was sure the killer was really corralluzzo. >> he was a pathological liar, and anything that came out of his mouth was a lie. and any story that he made up, was made up! >> reporter: so many suspects, said the defense, and they put on a retired detective to accuse the police of tunnel vision. >> because if you're doing shoddy work in the beginning, and you're not paying attention to all the details and all the information, and vetting all of the leads, your investigation becomes sick, it's almost impossible to make it well again. >> reporter: as for forensic evidence, said the defense, forget about it.