Ace of Spades. Lady Gaga. Gucci. I-95. Twilight. MySpace. Grim Reaper. Skull and Crossbones. D.O.A. Heroin. “Each of these packages, which can sell for as little as $6 on the street, offered a grim window into Mr. Hoffman’s personal struggle with a resurgent addiction that ultimately, the police said, proved fatal. And the names and … Continue reading What I’m Reading: On Heroin…