The Dink Network

My theory is that the arson was committed by Martridge. It's way too convenient how Dink just "happened" to run into him right before the house was burnt down, then the guy goes and teaches Dink fireball. Ethel may also be involved, in fact, they may be related. She has a beard!

Also, what were the guards that harrassed a traveller doing near Stonebrook? They were probably after Martridge... And he disappeared to escape the law. It all makes sense.