I really need to brush up on my biology because my hints told me the sick organ was vital, and contained the letter D... well the only one I could find hovering over everything that was matching that description was the only remaining kidney, buuuut that was wrong. I need to go brush off my old elementary school books because I clearly can't recall all the organs in the body anymore xD Nice little macabre game. I love the little dance the plague doctor does when he gets an organ right.