Never before has criminal justice rested so heavily on scientific evidence. Gallop is one of the world’s most eminent forensic scientists. During a career spanning more than forty years, she has helped to drive change and transformation within the field. A specialist in cold-case investigations, Gallop has led forensic teams to find vital evidence in many of the UK’s most challenging cases, including the investigation that finally absolved the Cardiff Three and the killings of Stephen Lawrence, Damilola Taylor and Rachel Nickell.