I'm wondering if he's wearing a disguise - false nose, teeth, etc., and showing his face in that picture on purpose. That may be crediting him (or her) with more criminal savvy than they have, but it's possible and it would make sense.

If they ever do find him or her via DNA or something else, they can always say, "Hey, clearly that's not me in the picture!"

The face does look almost too perfect and it has exaggerated features - large nose, cheeks, and chin. Any disguise is going to make things slightly bigger, right?

The big story here seems to be how overwhelmingly positive and supportive of the killer social media has been, even among doctors and other health care professionals. Most aren't coming right out and saying, "Well done!", but they're coming pretty close.