this is orlando anderson. he's in the right rear seat.right front passenger seat. >> reporter: without question, in your mind, based on your investigation, keefe d davis is the mastermind? >> none of them would have made a decision to do something with keefe d in the car unless keefe d was part of that decision-making. >> reporter: what's the status of these other gentlemen? >> all deceased. davis is the only member still living. >> reporter: orlando anderson had always denied his involvement in tupac's murder. he died in an unrelated gang shoot-out in 1998. but keefe d's words alone allegedly telling the police he provided the murder weapon to another weren't enough to make an arrest at that point. >> we had no corroboration. no other cooperation of any other individuals. duane davis walks in and says, i lied. we have nothing to backstop that. the key on this case was to beyond the backstop it. >> reporter: coming up, the rival police department also talking to keefe d. >> a combination of arrogance and ignorance would prove to be his un