In 1973 the bodies of two 16-year-old girls were found dumped in South Wales. The friends had been raped and strangled on their way home from a disco. Less than a year later, the police trail had gone cold. It was not until a breakthrough in DNA fingerprinting some 30 years after the murders that detectives, finally had a chance of finding the killer. But was it too late? For more visit lightsonpod.com and be sure to subscribe. Resources: theguardian.com | wikipedia.org | walesonline.co.uk | gale.com