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.

In strife-torn Renaissance Florence, Leonardo da Vinci continues his search for the legendary Book of Leaves while warring against a new crowd of mortal enemies intent on squelching his genius and obscuring his past. 3-disc set includes episodes such as "The Blood Of Man", "The Blood Of Brothers", and "The Voyage Of The Damned".