If I Did It: Confessions of the Killer
If I Did It: Confessions of the Killer is a book authored by O. J. Simpson with ghostwriter Pablo Fenjves, in which Simpson puts forth a hypothetical description of the 1994 murders of Nicole Brown Simpson and Ron Goldman. According to Fenjves, the book is based on extensive discussions with Simpson.
Source: Wikipedia — If I Did It: Confessions of the Killer (CC BY-SA 4.0)