Kate Bennett vanished from a parking lot eleven years ago, leaving behind her husband and young daughter. When she shows up at a Montana gas station, clutching an infant and screaming for help, investigators believe she may have been abducted by a cult.

Kate's return flips her family's world upside down--her husband is remarried, and her daughter barely remembers her. Kate herself doesn't look or act like she did before.

While the family tries to help Kate reintegrate into society, they discover truths they've been hiding from each other about their own relationships. But they aren't the only ones with secrets. As the family unravels what happened to Kate, a series of shocking revelations shows that Kate's return is more sinister than any of them could have imagined.