I was covering Magistrates' Court for the local paper and a guy was up on serious assault and drug possession charges. Hair down to his arse, matted beard, filthy jeans and ripped tee shirt.
I also happened to be at Crown Court when his case came up for trial. He had a very smart haircut, was clean-shaven and was wearing an expensive suit.
Giving evidence he pretended to get lost between the dock and the witness stand, and apologised profusely to the court. He also held the Bible in his left hand by mistake when giving the oath.
But the jury had been told to reach a verdict based on the evidence they heard in court. He was convicted on all charges, but you could tell that the members of jury were all concerned that such a smart, polite young man's life was being thrown into turmoil.
That was until the prosecuting counsel read out his previous convictions. It turned out he was a complete thug with a record as long as your arm. Jaws literally dropped among the jury. The twelve good men and true realised that they had nearly been conned, and the body language rapidly changed from sympathy to anger.
But they got it right in the end.