Factor VIII was sold as a medical miracle when it was first put on the market in the late 1960s: a revolutionary treatment that freed people with haemophilia to reclaim their lives. But as the cure was rolled out, haemophiliacs began to contract hepatitis and AIDS in terrifying numbers. Cara McGoogan traces the line of infection back to the pharmaceutical companies who made Factor VIII by pooling thousands of donors' paid-for plasma and selling it for billions of dollars. The miracle treatment was infected with HIV, and it was being injected straight into the arms of haemophiliacs around the world. In this David and Goliath story, we follow the survivors-turned-campaigners, the small-town lawyers and the fearless journalists who took on some of the most powerful interests in the world to uncover what really happened in the infected blood scandal, the worst treatment disaster in NHS history.