A notorious London murder case hides a far darker truth: an innocent man was executed while the real killer walked free. Vicky McClure and Jonny Owen uncover the chilling story of John Christie and the devastating miscarriage of justice that shocked Britain. In a unique historical crime series, Vicky McClure and her historian husband, Jonny Owen, travel the UK exploring historic, culturally significant crimes that have changed the face of modern Britain. The married couple investigate unsolved murders, miscarriages of justice and milestone cases that have changed the law. Speaking to experts, historians, police officers and victims’ families, they examine the lasting impact each murder has left on the community and why these cases still resonate today.