"When light is refracted through a prism, the light that comes out is the same light that went in--but it's altered slightly. That's what happens to three teens on a school trip to Carlsbad Caverns. After a terrible crash in the desert, Kaida, Joy, and Zeke fall through a hole in space-time and awaken in their own beds in a mirror universe in which illness is a death sentence because medicine doesn't exist. Jenna Lamia's voice provides just the right ingenuousness to Kaida as the 14-year-old stumbles around in a world in which everything is changed. Lamia makes Kaida's confusion palpable and her suspicions reasonable. The story is a bit of a stretch, but tweens and younger teens will find enough excitement to keep them listening. S.J.H. (c) AudioFile 2009, Portland, Maine"