Digging up ancient history

The other night, on the tube, a lawyer was advertising a CD that one could use to write one's will.

I recognized the lawyer as the man who represented O.J. Simpson at his arraignment after the murders in LA.

One of the first things the lawyer did was to present to the judge a brown envelope for admission to the evidence room for safe-keeping. I think the envelope contained the knife which was never found.

It was never found because it's locked away in the evidence room in LA.

Of course, when the high powered defence team took over, they never requested presentation of the brown envelope's contents. They may not have been aware of its existance. So the knife, probably with condemnatory traces of blood, is hidden safe forever by order of the arraigning judge.