(Holmes relays the information that the severed ears are a DNA match to Sarah Cushing)
Watson: You are kidding!
Holmes: That's me, Watson, joke machine.
Holmes: This arrived for you from Detective Bell.
Watson: You opened it?
Holmes: It's just a few files pertaining to recent muggings. I'm curious, since when do we investigate common street crime?
Watson: Since when do you open my mail?
Holmes: How long you lived here?
Special billing was given to Aidan Quinn (and) for this episode.