The opioid crisis and the role of Purdue Pharma might seem like a US-based story. But there is much profit being made from pain in Europe, and new addicts are being created in the process. Paper Trail Media, in collaboration with The Examination, uncovered the opioid business on this side of the Atlantic, leading to a documentary aired by ZDF in Germany, and a front page story in the Washington Post. Find out how they did it – and how the story is still being uncovered in an area where data is sparse.