sidner: we know from talking to an attorney for one of prince's half brothers -- duane nelson was prince'sey basically grew up together, and throughout their young life, duane was someone who protected prince. when prince became a music star, he was on the payroll, and he was prince's number-one bodyguard. sidner: duane nelson says to his attorney, michael b. padden, "you know prince was taking percocet." one of his main duties when he was prince's bodyguard was to procure percocet for prince. sidner: another of his siblings, lorna nelson, also gave similar information saying that, "yes, indeed, prince had taken some illicit drugs." padden: it became such a significant issue that lorna, who also was estranged from prince -- i want to be very clear about that -- but was very privy to what was going on in his life, and i would say approximately 2004, it was her belief that prince was going to die, his drug use was so out of control. so you have two half siblings who both share the same story at different times in prince's life. unfortunately, we can't talk to them because they have both died