this week's episode was mainly about Jane, a deeper view on his personality really, more than solving the crime. actually, they didn't even need to investigate as usual. Killer was caught, she confessed, in exchange for not pursuing charges for her butler.
It's amazing to see how Jane is acting when he is around rich people. He knows exactly how to piss them off, and it's hilarious. But the ending was very emotional and somewhat disturbing. The coroner Jane was teasing sometimes had a terminal illness. Jane realized that. He showed it by his gesture, by inviting him to drink an expensive scotch next to fireplace. And at the end, the coroner asked Jane to witness his death, because he didn't want an investigation after his death at suspicious circumstances.