When Emmie Keyes' twin brother, Will, is murdered she knows her time has also come to end. That's how it has always been. Mentally linked together, the twins of her world, share everything, including death. Except this time. When Will dies, Emmie doesn't. 

Devastated and confused, Emmie sets off to find the only man who might have answers, Tobias Zen, a man known for saving the world from a devastating experiment that wiped out 20% of the population and shifted the balance of power even to this day. Yet even he has grown power hungry in the decades since, unlikely to help Emmie and much more likely to use her to pursue a dark secret of his own.