More than 20 warships are closing on the 200-mile perimeter that Marcus Chaplin declared as a no man's land around the island. And as XO Sam Kendal is drawn into a battle on the ground to keep them alive, Prosser confronts Marcus about something personal to him that could be impacting his judgment as Captain of the Colorado.

Cast: Dichen Lachman, Omid Abtahi, Daisy Betts, Andre Braugher, Assaf Cohen, Chad Michael Collins, Jenny Cooper, Bobby Davison, Darri Ingolfsson, Michael King, Daniel Lissing, Sahr Ngaujah, Robert Patrick, Autumn Reeser, Damion Scandrick