This series of book covers expresses the main emotions in each of Neal Shusterman's novels. Each cover features strings being manipulated, a common metaphor in the book. Unwind shows the fear the teen's body language in the dystopian society. Unwholly expresses the anguish and confusion the characters face. Unsouled, the final book, shows the falling apart of the society on the bottom, and the freedom felt by the teens on the top.