Three days. Twelve dying worlds. One woman hunted across realities-with the truth powerful enough to end them all.Twelve parallel worlds are dying-and the people claiming to save them are the ones pulling the trigger.Quantum physicist Diana Driscoll escapes the Aperture Institute with stolen proof of their plan to sacrifice billions. Stranded on Earth-1, hunted by agents who can manipulate reality itself, she has three days to infiltrate their fortress and turn their doomsday device into a solution.Standing with her: Alex Armstrong, a physicist drawn into a war he didn't know existed-and the counterpart of a man she once loved. Standing against her: Julian Jefferson, the mentor whose betrayal took her eye and nearly her life. He says he wants to help. She's heard that before.A parallel worlds science fiction thriller featuring a scientist heroine, found-family resistance fighters, second-chance themes, and a ticking-clock plot.