In 1944, a team of scientists thought they'd solved the greatest mystery in biology — only to realize they'd accidentally asked a different question entirely, one that would ignite a forty-year war over who deserves credit for discovering the structure of DNA. This episode goes beyond the Watson-Crick headline to reconstruct the overlooked experiments, the contested data, and the stubborn physical anomaly that kept telling researchers their elegant model was wrong — until a single X-ray photograph changed everything, and then became the most morally complicated image in the history of science.