At the Royal Courts of Justice, Alan and his friends give evidence on behalf of their army of 555 subpostmasters. All hangs on whether nervous whistleblower Richard Roll can describe what happened behind the scenes at the computer giant, Fujitsu. Shockingly, the Post Office tries to dismiss the Judge for bias. But Alan's side is running out of money, and he is forced to settle. Jo leads the successful appeal to have their unfair criminal convictions overturned at last. But though the truth comes out, and their legal victory is complete, there's no money left for compensation for their losses.
