She loves how excited he is about that bit of information. "One time we took a case from this guy who was, like, rich beyond belief. Sherlock doesn't care about money at all, since his father is also rich beyond belief, so the guy persuaded Sherlock to take the case by offering him a bee. A single bee, of a species known as the solitary bee. It's very rare, and builds intricate nests out of flower petals."