as the kind of drug people used in street alleys. but not anymore. >> that notion that it's concentrated in the inner city among the down and out is -- is less and less the case. >> reporter: as we've seen, heroin has an appeal beyond street corners. contributing to the death of beloved television star cory monteith. >> let's talk about this. we have bob forest, vh1 celebrity rehab and sober house and founder of bob forest counseling services joining me. also gary langus, recovering heroin addict. drug use researcher currently. sitting alongside him ken hansen, director of addiction services for the north suffolk mental health association. before we go to you, elizabeth cohen sitting next to me in studio seven. we just heard from you. those who know zero. just what we see in tv and on the movies. the needles on the street. heroin is an opiate. what does that mean? >> it means it depresses your central nervous system. so you get a high from it. but when you take too much of