his name, kenneth williams.several mug shots to the video. >> i think it's probably him, but then again the video is not real good. i start focusing in on him now. >> then his investigation got lucky again. unlikely witness came forward with information about that same kenneth williams and the night erica and her mom were shot. >> but the witness was questionable. he was charged with murder himself for which he later pled guilty to manslaughter and was also gravely wounded in the shooting. >> he's on his death bed. he thinks he's going to hell. and he has something he needs to say. >> weeks later turner's health improved enough to talk to rick. >> they hit a lick on somebody. >> what's that mean. >> that's like a robbery. >> robbery that quickly escalated to murder. >> he knew things he couldn't know. he knew things that weren't in the media. >> what kind of things. >> the pill bottlebottles. >> it was a long frustrating 15 month investigation, but rick was finally close to the answers ehe had promised erica's g