I have a question about the ending SPOILERS
Was it actually Stonehill's drug that the children received and which worked?
I know when he's giving Crowley advice on which one to pick, he says he'd recognize his drug a mile away and neither was his. He also says his theory is the best but this other one is ready for trials now.
But was he lying at this point or were the children really given some other treatment that happened to work? If so, what ever happened with Stonehill's actual drug? Did it get to market?