`` I 'm absolutely certain that my brother Glen killed Nicole Simpson and Ron Goldman , '' Clay Rogers says . Glen Rogers was sentenced to death for murdering women in Florida and California . He's serving a life sentence at the Lovelock Correctional Center near Las Vegas. Simpson and not Glen Rogers , '' Goldman 's father says . `` My Brother The Serial Killer '' debuts Wednesday on Investigation Discovery channel .
`` I 'm absolutely certain that my brother Glen killed Nicole Simpson and Ron Goldman , '' Clay Rogers says . Glen Rogers was sentenced to death for murdering women in Florida and California . Simpson and Goldman 's killer `` is O.J . Simpson and not Glen Rogers , '' Goldman 's father says . `` My Brother The Serial Killer '' debuts Wednesday on Investigation Discovery channel .