Yesterday's Gone: Episode 19

The best-selling post-apocalyptic serial thriller is back! Season Four picks up more than a year after Season Three’s conclusion. The survivors of the October 15, 2011 Event are back home, attempting to stitch their lives back together. Though safe at last, they can’t help but feel that nothing will ever be the same. Soon they realize, they didn't return to Earth alone. The Darkness has followed. Good must again battles Evil for control of the last vials. If The Darkness wins, humanity is doomed.