I've no reason to call you that. [Still so calm.] You're good at your job, though I am concerned that the ability of your misplaced righteousness [a hint of a fire, something other than detachment, at least] to override your sense of loyalty might become a problem. Especially when people-- [Lestrade] --trust you.

[He's forced everything down again, gone cold:] I'm not the one you need to supervise here.