All four episodes of the ITV drama which chronicles the British Post Office scandal, one of the most significant miscarriages of justice in British history. When a faulty computer system creates financial discrepancies, hundreds of subpostmasters are wrongly prosecuted for theft, fraud and false accounting. With many of them losing their livelihoods, their reputations and their freedom, Alan Bates (Toby Jones) forms the Justice for Subpostmasters Alliance and begins a 20-year fight for justice. The cast also includes Monica Dolan, Will Mellor, Julie Hesmondhalgh, Ian Hart and Shaun Dooley.