Sherlock! [His name is a snarl, frustration and fear for his friend mounting. John recalls that they're not alone and lowers his voice to a furious whisper.] Listen to yourself. Deduce yourself! You went behind my back and tried to trick me to secure your drugs. What the hell are you thinking? This isn't the place to muck about with narcotics. I don't care if it's controlled. You need to stop.