National estimated annual emergency room visits involving heroin.
Source: Substance Abuse & Mental Health Services Administration
It was only a few years ago that narcotics detectives in Tennessee started running into something they thought was new. It was usually brown, either in a powder or tar form. And addicts were itching for it.
Today, they know better. Today, they know that heroin, once thought to be a drug from a different era, is back.
"It disappeared for years. You could count on one hand the number of heroin cases you saw, probably in a 15-year period," Davidson County District Attorney Torry Johnson said. "For a time, I think you had some vice officers who didn't know what it is.