High school senior and amateur physicist Audie Masters isn't simply pursuing science anymore. Her discovery of parallel universes and time travel have now led to a race for Audie to save her own life before it's too late. From award-winning author Robin Brande comes the exciting, mind-bending conclusion to the Parallelogram adventure. You'll never look at the universe or your own life the same way again. Conclusion of the PARALLELOGRAM QUARTET.