Amie Kaufman’s “Beyond the End of the World” is an exciting follow-up to “The Other Side of the Sky.” The narrative takes place in the opulent skyscraper city of Ciel, where worlds apart Nimh and North yearn to be together. An ultimate test of their relationship skills and faith in one another awaits Nimh who is still holding to her divinity and North who is eager to get back to his world. To defend their homes, they must fight fate as they make their way through danger and mystery.