his blood cast a pattern on the wall. He began sketching it and comparing it with the wound and the angle of the blow. When a young lady evidenced great interest in what he was doing, he quite happily explained it to her, never once realizing that she was not interested at all in the blood pattern and was rather more interested in his—” He coughs. “In his ability to pay for her services.” “Ah, she was a sex worker.” “A what?” “Lady of negotiable affections?”