(Producer) Chemical addiction is now being treated like a disease, and a cure appears to be on the horizon. Approaching the topic of heroin, cocaine, alcohol, and nicotine addiction from a biological perspective, this program features new research into the meso-limbic reward pathway and efforts to implement treatments based on that research using Zyban, Naltrexone implants, and even a cocaine vaccine. Spectacular 3-D graphics, high-tech medical imaging, and case studies add emphasis to the findings of Nora Volkow, Anna Rose Childress, Tom Kosten, and other experts. Footage of the first human trial of the cocaine vaccine at Yale University is included. A BBC Production.