we did get one name, walter miller and a number. narrator: walter miller?ller's around austin and found two of them. neither one fit that description, though. and the phone number the man left-- course they looked up to walterg miller around austin and found two of them. neither one fit that description though. and the phone number the man left? >> it ended up being a fax machine. it ended up belonging to the wife of a guy, by the name of matthew supolsky. >> matthew supolsky. what with you? >> he had a background involving a drug addiction, the muscles, a restraining order against him. and we eventually tracked on matthew >> and they realized right away he could not be the killer. >> he was in a neck brace, he had been in a bad accident, he had paralysis on his arms, so we knew it couldn't be in. >> meeting, this visitor, whoever he was, left a fake name and a big phone number. who would do that? then they found another neighbor, who had talked to the guy, heard his story, got a good enough look at him to help with a composite sketch. >> and we aired it on