>> tell us your name, please, sir. >> keith wayne griffith. >> reporter: keith's explanation came witht. his lawyer argued that that ever since becoming a travelling salesman, keith struggled with an addiction to sex. >> keith, until you got out on the road several years ago, did you have this kind of a sexual addiction? >> no, sir. >> reporter: and the night julie was murdered, he said, he spent those hours out prowling for women. after he left the hotel, he changed out of work clothes into his man-out-looking duds. >> didn't like people to put my job with my carousing. >> with your carousing? >> uh-huh. >> all right. >> reporter: he says he went to a massage parlor, a bar and a couple of strip clubs, but, try as he might, he never found a hook-up. >> i was trying to pick somebody up, and there wasn't anybody available or interested or however you want to put it. reporter: after last call, he said he went down to the river to watch the boats before returning to the hotel to catch some shut eye. as for why he lied to the police -- >> i was embarrassed and ashamed of what i was doing th