So all this... [He gestures towards the hospital.] ...this was in control, right? Almost dying was surely nothing, right? Overdosing, not a big deal? I'm sorry, I'm not quite up to date with the latest in addict-speak...

[Mycroft's tone is harsh, angrily so. It's obvious that Sherlock's not going to stop.]

One day you'll overdose again, but this time you'll be too high or ill to call me. What then, hmm? What then!?