hard. >> reporter: right away steve rushed over to carol's house. a detective had a recorder rolling. you can hear charlotte sobbing. and steve talking. >> the last time i was out here was-- i don't know. i'm sorry. i don't know. it's been a while. >> reporter: someone else talked to the detectives, too. a man who showed up just minutes after the deputies got there. jim knapp, carol's boarder. the man who had been living in the guest house. >> i can't remember the month i moved in. >> reporter: and jim knapp had a lot to say about carol, but he didn't stop there. >> it was certainly a gruesome scene. >> blood drops. shoe prints. the clues tell a story. >> the shelf was knocked over several minutes after the blood hit it. >> was this crime scene staged?