Once Zoe realizes that X is there to kill Stan, she doesn't want him to die even though he is a no-good, very bad man. She gives X a look. Her look is powerful enough to give X pause. Of course this means that Stan the Man escapes setting the major conflicts in motion.
This novel is part fantasy. The parts that focus on X in the Lowlands are the best! The Lowlands sort of resemble a type of hell. Some of the inhabitants are bounty hunters who brings evil souls back to the Lowlands. What is really fun about this setting is that there are folks from different parts of the world and from different time periods.
This novel is part mystery. Who exactly is X? Who are his parents? Why is he in the Lowlands? As you read, you discover other parts of the mystery as X learns them.
The novel is also a coming of age story. While X is dealing with life in the Lowlands and his desire to reunite with Zoe, she is dealing with the death of her father after a caving accident. Part of Zoe's story involves her and a caving expedition. This section was so suspenseful. I really felt as if I was in the claustrophobic cave with Zoe!
Can X and Zoe be together even if they come from two different worlds? Read The Edge of Everything by Jeff Giles to find out! I recommend it!