Cheyanne: And Other Tales from Underground

When Ethan returned to Complex 48 he told his sister about his escape, and about the girl who helped him. But who was she?
There are two sides to every story. It's time to meet Cheyanne, the girl from the surface, who is swept along in Ethan's bid to change history.
Also included: "Fifty-Fifty" - Whatever happened to Martha, Devin, and Jay? Who was that strange, skinny man? And where did all these powers fro from?