This release collects every episode from the fourth season of Falling Skies, the long-running series that takes place in the aftermath of an alien attack that left Earth a shell of its former self. Led by Tom Mason (Noah Wyle), a history professor, a group of human survivors who call themselves 2nd Massachusetts band together to make a stand against the alien invaders.

Detective Sonya Cross (Diane Kruger) must work with Mexican law agent Marco Ruiz (Demian Bichir) to solve a murder that took place on the border of the United States and Mexico. When an investigation reveals the murderer is a serial killer, the two agents find themselves in extreme danger as deadly secrets are unearthed.