Robyn McCall, an enigmatic former CIA operative with a mysterious background, uses her extensive skills to help those with nowhere else to turn.

Dr. Dylan Reinhart, a gifted author, university professor and former CIA operative is lured back to his old life by tenacious top NYPD Detective Lizzie Needham. Though Dylan and Lizzie initially clash, when it comes to catching killers, they make an ideal team.

The adventures of young H.G. Wells and his time machine.

Falling Skies opens in the chaotic aftermath of an alien attack that has left most of the world completely incapacitated. In the six months since the initial invasion, the few survivors have banded together outside major cities to begin the difficult task of fighting back. Each day is a test of survival as citizen soldiers work to protect the people in their care while also engaging in an insurgency campaign against the occupying alien force.