With Wausau under martial law, Wayne struggles to shield his daughters from the rising chaos, while a shocking ally emerges and changes the course of the investigation.
The past collides with the present, as an old case and some old friends help Dana and Em piece together the chilling truth about Revival Day's origins.
In the shocking season finale, Dana and Em uncover the horrifying truth about Revival Day, but at an unimaginable cost that changes the Cypress family and Wausau forever.