Talking specifically about OJ Simpson, http://en.wikipedia.org/wiki/O._J._Simpson_murder_case
The case is now over 20 years old so it fits into the scope of this subreddit.
A similar question came up a month ago:
I'll repeat my mod message here:
Just a reminder that this subreddit focuses on history which for purposes means events/conditions at least 20 years ago, i.e. <= 1995. As such, responses can comment on the original "OJ Trial", which ended in 1995, but not any subsequent legal action / evidence / etc. Also be reminded that speculation is not permitted here, so confine discussion to documented facts.
OP, considering the restrictions in this sub, I'm not sure how useful any responses will be. You might consider posting this question to a sub specializing in USA legal matters.