This Sunday sees the 2-hour Season 4 finale for Falling Skies.
TNT released a sneak peek preview at the episode that airs starting at 9pm ET.
Falling Skies will be back for its final climactic season next year.
About Falling Skies:
Falling Skies, executive-produced by Steven Spielberg, opens in the chaotic aftermath of an alien attack that has left most of the world completely incapacitated. Few survivors have banded together to begin the difficult task of fighting back.