In a battle for control of the time stream, the past and the future will collide, either saving mankind—or destroying it. Stein has been with the Hollows for as long as she can remember, taken as a child she has no memories of her past—and that’s always been fine by her. Until the day she stumbles across a hidden journal containing the devastating truth about her paternity. Now everything she thought she knew—and everyone she thought she could trust—has changed. The truth about who she is and where she came from is a secret so deep, it will rock the Hollows and the Tesla Institute alike. During a test to verify her bloodlines, Stein makes a terrible discovery. She is carrying a rare genetic mutation that is slowly killing her. Unsure who to turn to and running out of time, she has no choice but to turn to Tesla—her most hated enemy—for help. But can she trust the man who she's been fighting against her whole life, or will she end up another piece in his deadly game of cat and mouse with the people who betrayed her so long ago?