Sasha returns to Aurora, the parallel universe of generals, princesses, body doubles, and the boy she loves, Thomas, where she tries to help and find missing people and save them all. "Everything repeats. Sasha expected things to go back to normal once she got back on Earth. But now that she knows parallel worlds are real, and that an alternate version of herself exists in a world called Aurora, her old life no longer seems to make sense . . . and her heart breaks daily for Thomas, the boy she left behind. Troubled by mysterious, often terrifying visions and the echoes of a self she was just beginning to discover, Sasha makes the difficult decision to journey once more through the tandem. Thomas is waiting for her on the other side, and so is strange, otherworldly Selene, Sashas analog from a third universe. Sasha, Selene, and their other analog, Juliana, have a joint destiny, and a new remarkable power, one that could mean salvation for Selenes dying planet. With Thomass help, Sasha and Selene search for the missing Juliana. But even if they can locate her, is Sasha willing to turn her back on love to pursue a fate shes not sure she believes in?"--From publisher.

Sequel to" Tandem.