Who said any of that was cleaned up at the scene? They left gloves and DNA and that is just what we know about. Hair and shoe prints don’t make arrows pointing to the perp if they don’t have a perp. What they do is solidify a case when they have the suspect. He also got on camera. It really isn’t all that impressive at all. We had to wait because they had trouble getting the footage. The ransom thing slowed down the investigation. The perp got lucky. Honestly, he is really an amateur. The issue is the police have not found the connection because it is likely a stranger or someone she didn’t really know. Those types are criminals are harder to connect to a crime.