Goldman was afraid according to friend Private Investigator
<a href="http://m.personalinvestigations.net/site/press_1.html?imz_s=tm103gke1dsaps7dkc58ia7f76">;
Private Investigator says Goldman was afraid for his life</a>
You can start at F. Lee Bailey's website; he has three PDFs outlining the case from the prosecution's side. There's a documentary produced by the BBC that goes into detail about the restaurant, and the other possible culprits in the case, including a man who was paid to follow Nicole. There's a lawyer who claimed to try to access Goldman's criminal record, but he stated it was sealed under a mandate that basically would prove that Goldman was a snitch.
You should be able to Google the info on the ex of the wife of Fred Goldman; he was a notorious mob boss. Goldman even mentions him in his book, but not by name.
The Bailey PDFs are REALLY interesting.