"Jo..." It does not help that Merlin can hear himself turn that one name into a caress. The sane thing to do would be locking Doc into his own room fur the duration of the drugs and just sit outside the door.

But it wouldn't be the right thing to do. And he can't even believe he's actually thinking this through. It's only after Merlin realizes that he's watching Doc's lips curl around that cigarette that he finally moves, absently picking up the match and finding an ashtray to put it in.

Which he then sets near Doc.

"No, you've got it all wrong, Doc. I'm not safe. At all. No idea what I'm capable of..." The sorcerer needs to shatter those illusions right now before Doc gets anymore ideas into his head.