‘One of the larger mysteries I’ve ever seen’: Industrial chemical found in illicit fentanyl

The drug supply is constantly evolving, and some experts suggest that a “fourth wave” of the opioid epidemic is underway, in which illicit fentanyl is more frequently mixed with other drugs.

​ The drug supply is constantly evolving, and some experts suggest that a “fourth wave” of the opioid epidemic is underway, in which illicit fentanyl is more frequently mixed with other drugs. Read More Breaking News, Latest News and Videos | CNN