It took 47 years to overturn the convictions of Winston Trew and the Oval 4. When the illegal activities of corrupt cop, DS Derek Ridgewell, were presented to the Court of Appeal, Winston's conviction was ruled unsafe. This case shines a light on not only the wrongful actions of one police officer, but also on a wider systemic failure to right those wrongs. This is part 2 of 2 which features Stephen Simmons and Jenny Wiltshire.