America is hooked on opioids — by one count, there are currently more opioid prescriptions than people in the southeastern United States. This week, we we’re taking a deep dive into the causes of the opioid crisis.

We speak to the author of Dreamland, Sam Quinones, on how communities have been torn apart by addiction. We hear from a surgeon and father who lost his son to opioid addiction. And we tackle the latest research on how opioid dependency is affecting so many Americans.