You are correct. Murder. And he was photographing himself in the woman’s underwear while in their house. It’s incredibly compelling video. Hollywood couldn’t have come anywhere near doing as good a job. The guy doing the questioning was incredibly composed. He led the killer down a path that he knew he could not get out of. I strongly recommend watching it. You only have to see 40 minutes to get to the confession.
There was a case like that on “Forensic Files” I think.