it's beauty, - [macaw vo] pretty boy. - or the beast. - the beauty, - [macaw vo] pretty boy. has failed. the beast, john cox, will open schools, get our economy roaring. learn about california's nicest, smartest beast at johncox.com ♪ ♪ >> tucker: so many americans, many of them young people have died from drug overdoses in recent years and it has changed the demographics of certain parts of the country and completely changed the economy. how did this happen? where did the opioid crisis come from? well, he has written a definitive history of it. a well-known author called joe plattner. he has written a book about how mckinsey made this epidemic possible. we had a long conversation with him recently for our new episode of "tucker carlson today." here's part of it.