no, said the cbi's jody wright.ike a cover-up. >> nothing in his statement matched anything that i knew to be at the crime scene. it just didn't make sense. none of it. >> it wasn't really that ralph changed his story in his "world journal" manifesto, not exactly. more like he kept adding to it. so he watches very carefully what you're doing and tailors his story to match what he thinks you're finding. >> exactly. >> ralph kept explaining, kept offering not less, but more details. about, for example, the drawer pulls in his house, the ones investigators removed to test for fingerprints. >> in the event that one of the invasion persons touched them. >> now here's ralph with the police at his house just after pam was murdered. noticing the missing knobs. >> what happened to all the knobs? >> he was very upset that they were missing. >> i don't understand why the knobs are gone. >> and he would know you're looking for fingerprints of these home invaders. >> well, yes. >> but what if they didn't find any fingerprints be