Mr Bates vs The Post Office

Mr Bates vs The Post Office is a four-part British television drama series for ITV, written by Gwyneth Hughes, directed by James Strong and starring an ensemble cast led by Toby Jones. The series is a dramatisation of the British Post Office scandal, a miscarriage of justice in which hundreds of subpostmasters were wrongly prosecuted (privately and publicly) for theft, false accounting or fraud due to a faulty computer system called Horizon.

Source: Wikipedia — Mr Bates vs The Post Office (CC BY-SA 4.0)