I've probably killed more people than both of them. [In war, but never mind.] Think we should start warning people about me?

['Will Graham might want to, and Pierce was certainly angling for it,' Mary says, some mild snark in her tone.]

This isn't helping.

[It's a comment more directed at Mary, but it could be interpreted otherwise as he glares at his friend. His gaze does flicker momentarily to the side of Sherlock, though.]