"Then we should have no major problems." Mycroft nodded. "If you keep it coached in vagaries and caprices, then there is nothing I can do but remain in perpetual irritation."
Which, frankly, is not anything out of the norm for Mycroft's life as it is.
"More of a caution against leaving evidence or confessions laying about. Something which I do believe you've grown out of." He offered a hint of a smile.