"Really?" she laughs at the statement about Roy. "Wow. I would not expect that. He's a great guy and everything, but I definitely wouldn't think Mr. Angry Eyebrows himself would be good with kids." She looks over at her partner with a smile. "Sherlock is surprisingly good with kids."

He looks at her with a scowl. "I don't know how you've come to that conclusion, Watson."

"You're amazing with Archie," she points out. "And I've seen you relate to older kids in our investigations."