In a dystopian, near-future Los Angeles, California, a couple, Katie (Callies) and Will (Holloway) Bowman, live with two children, under a regime of military occupation by an organization known as the Colony Transitional Authority. They are part of a larger invading force, ostensibly of extraterrestrial origin, who are referred to as the Hosts, and as the Raps, apparently a reference to raptors.
Josh Holloway as Will Bowman previously starred in Intelligence.
Sarah Wayne Callies as Katie Bowman previously starred in the Walking Dead.
Peter Jacobson as Alan Snyder previously starred in Ray Donovan.
Amanda Righetti as Madeline "Maddie" Kenner previously started in The Mentalist.
Gonzalo Menendez as CaptainLagarza
Tory Kittles as Broussard previously started in Sons of Anarchy.
Alex Neustaedter as Bram Bowman
Isabella Crovetti-Cramp as Gracie Bowman previously started in The Neighbors.
Kim Rhodes as Rachel
Paul Guilfoyle as Quayle
Carl Weathers as Beau
Ally Walker as Helena
Kathy Baker as Phyllis
Kathleen Rose Perkins
Thora Birch as Morgan