It is now 100 years since drugs were first banned. On the eve of this centenary, journalist Johann Hari set off on an epic three-year, 30,000-mile journey into the war on drugs to uncover its secrets - and he found that there is a startling gap between what we have been told and what is really going on. As strange as it may seem at first, drugs are not what we have been told they are; addiction is not what we think it is; and the drug war has very different motives to the ones we have seen on our TV screens. In 'Chasing the Scream', Hari reveals his startling discoveries entirely through the true and shocking stories of people across the world whose lives have been transformed by this war.