Well, I listened to this story three times. It became increasingly creepy each time, mainly because I noticed something new. It felt truly horrific because of the elements: the instability, the extremism, the immigrant brother and his American wife, the common childhood belief in the supernatural which is often shared by adults and can be used to explain events and actions that seem too horrific to attribute to humans. This was a brilliant coming of age story, which happened to be horror.
I found that I was haunted by both this story and The Screwfly Solution in a way that rarely happens to me with horror. I think it's because both are firmly rooted in reality. I believed both worlds. In this one, I could feel the aftermath of my story creating itself in my head. The horror was just beginning at the end.