"On 23rd April 2021, the Court of Appeal quashed the convictions of 39 former Subpostmasters and ruled their prosecutions were an affront to the public conscience. It is a scandal that has been described as one of the most widespread and significant miscarriages of justice in UK legal history. The 39 were just a few of the 738 people who, between 2000 and 2015, had been prosecuted by the Post Office for theft, false accounting and fraud. The prosecutions were based largely on evidence drawn from Horizon, the Post Office's deeply flawed software system that threw up duplicate entries, lost transactions and made erroneous calculations. If these errors resulted in apparent losses, Subpostmasters were forced to settle the discrepancies from their own pockets, sometimes for tens or hundreds of thousands of pounds. Those who could not pay were sacked and taken to court. Proud pillars of their communities were stripped of their jobs and livelihoods. Many were forced into bankruptcy and or borrowed from friends and family to give the Post Office thousands they did not owe. The really unlucky ones were sent to prison. This is the story of how these innocent people fought back to clear their names against a background of institutional arrogance and obfuscation, a fight dragged out by the Post Office's refusal to accept responsibility for its failings." -- publisher.