Nora awakens in the midst of an earthquake to find Kevin missing; the Murphys are left reeling after Evie's disappearance; Kevin returns home with no memory of the night before; an old enemy returns.
Nora is irritated by unexpected visitors; Kevin's predicament becomes impossible to ignore; Erika finds an unlikely ally and reveals haunting secrets.
Jake and Hawkins have just one chance to prove to the Texas government that they have evidence of one of the biggest conspiracies in history, but the Cheyenne government stands in their way.