Mary Vincent was just 15 when she survived an incredibly brutal attack by a man who severed both her arms and left her in a ravine to die. It was the autumn of 1978 when the teen was hitchhiking in an attempt to get to her grandfather's house having run away from home. She was approached by a seemingly kind older man in a blue van, who offered her a lift. Initially hesitant, she accepted. It was a fateful decision. The driver was 51-year-old Lawrence Singleton, a former merchant seaman. He