Heroin use is increasing nationally. In Washtenaw County, were not insulated from this unfortunate trend; last year, at least 25 people died of heroin overdoses compared to 11 in 2012, and 10 in 2011. My ties to Ann Arbor's seedy underbelly are not what they used to be (I no longer work in the restaurant industry) so I don't know any current users. I do hear things though, mostly from my students. The Ann has a good long-read about the increase in heroin usage in the Ann Arbor Area. It's definitely worth a read.
Image via Washtenaw County Sheriff's Office