'I believed he did it': O.J. Simpson's ghostwriter reveals details beh… CNN 0 140 04.12 12:03 https://www.youtube.com/watch?v=Ym-700iMThU + 175 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 15 'I believed he did it': O.J. Simpson's ghostwriter reveals details behind the book 'If I did it'