Sarah Keller is a young single mother living in Oklahoma with her five-year-old daughter, Zoe. But when a school bus accident sends Zoe to the ER, tests reveal Sarah can't be Zoe's mother. Sarah has been living a lie for years and finally the truth is coming out. Who is she? Who were Zoe's parents? And why does Zoe's identity bring the FBI down on Sarah's tail in mere minutes?Something deadly lurks in Sarah's past and its resurfacing brings terror to all it touches.