Just when you think you’ve seen the scariest opioid concoction, another even more frightening one appears. The latest mix is called “Gray Death”, looks like concrete, and is so potent that it can be risky to touch and can kill you with one dose. Also, Gray Death can be quite addictive (otherwise, why on Earth would you want to take something that looks like concrete?). Except for these caveats, what possibly could wrong if you try it?