The Sackler name adorns the walls of many hallowed institutions – Harvard and Oxford Universities, the Metropolitan Museum of Art in New York, and the Louvre. But the source of the family’s wealth has become an international scandal. They are the main owners of Purdue Pharma, a pharmaceutical company responsible for making and marketing the addictive opioid OxyContin.

Baillie Gifford prize winner Patrick Radden Keefe came to Intelligence Squared to talk about how one family become associated with an epidemic of drug addiction that has caused the death of almost half a million people.