coming up next on "lockup: extended stay," the contraband investigation turns to billy groves. >> you want to give me any statement on this or anything like that? >> i don't have anything to say. >> while another inmate remembers the last time he saw his folks. >> just after midnight when they arrived, i killed them both. i was taking a multivitamin... but my needs changed... i wanted support for my heart... and now i get it from centrum specialist heart. new centrum specialist vision... helps keep my eyes healthy. centrum specialist energy... helps me keep up with them.