On 1 January 2020, Sarah Gilbert, Professor of Vaccinology at Oxford University, read an article about four people in China with a strange pneumonia. Within two weeks, she had designed a vaccine against a pathogen that no one had ever seen before. 12 months later, vaccination is being rolled out across the world to save millions of lives from Covid-19. In this book, we hear directly from Professor Gilbert and her colleague Dr Cath Green as they reveal the inside story of making the Oxford vaccine and the cutting-edge science behind it. This is their story of trying to fight a pandemic as ordinary people in extraordinary circumstances. Sarah and Cath share the heart-stopping moments in the eye of the storm; they separate fact from fiction; they explain how they made a safe vaccine in record time with the eyes of the world watching; and they give us hope for the future.