The opioid crisis is unfolding around us in real time. But it isn’t just a problem in the US. Following the trail of a new outbreak in addiction leads us across continents and eventually full circle to where one of history’s most addictive drugs was first concocted. Pain relief, dependency and life-destroying consequences – this is how opioids entered the pharmaceutical market and keep us hooked.

We trace the unexpected backstories of everyday things – things that have traveled the world, by force, by chance, or by choice. How did this item or idea change as it moved through different cultures and eras on its way to you? And what surprising truths does its story reveal about our world today?