As if 17-year-old Alexandra Lucas anxiety disorder isn t enough, mysterious holograms suddenly appear, heralding the end of the world. They bring an ultimatum: heed the warning and step through a portal-like vertex to safety, or stay and be destroyed by a comet that is on a collision course with Earth. How s that for senior year stress?

"This is your known destruction. Save your people. Save youself. Before it is too late"--Cover.