"I've been wantin' to for a real long time. Before I quit the Fourth, even. I wanted to know what kind of man would do what he did to his own son. You know I don't like Elias but I still don't think what was done to him was right."

That's all true. Pretty much from the day he and Marco became priests and they saw what Elias's body really looked like, Fiddleford has wanted to talk to Dr. Liewen and ask him why. Why would anyone ever, ever do that to their child.

"He, uh. He told me about a way to fix it. To take the Fog God's power back out of Elias. And I'm going to do it."