Joan appreciates Ted's thoughtfulness, and when she sits she surreptitiously brushes her knuckles against the back of his hand as she's getting comfortable, a tiny hidden gesture of affection and thanks.

Keeley's excitement is infectious, and Joan smiles wide. "I'm a consultant, so they bring me and my partner in on the cases that have them stumped. We actually live in New York, so the cases have to be pretty big to bring us here."

Keeley might think that Sherlock is a romantic partner, and at the moment she won't disabuse her of the notion