The extraordinary story of the greatest miscarriage of justice in British legal history, where hundreds of innocent sub-postmasters and postmistresses were wrongly accused of theft, fraud and false accounting due to a defective IT system.
Watch on ITV1 1st - 4th January at 9pm or on ITVX.
Watch on ITV1 1st - 4th January at 9pm or on ITVX.