As a thriller this was fun and had some twists I didn't necessarily predict. This had a lot of unfullfilled potential imo. This could have been a modern day take on the Screwtape Letters by really digging into how hell gains souls. This story mainly just illustrated humans making deals with the devil out of desperation or greed. It doesn't really show us how these demons can tempt people in their everyday lives in ways that lead them to ending up in hell. For me reading this was like drinking a chai latte--good enough for what it is but what I really wanted was rich flavorful coffee, so ultimately unsatisfying.