Fallout star Justin Theroux says he feels post-apocalyptic stories are "captivating because they're possible".
The hit TV show is an adaptation of the popular role-playing game of the same name, set 200 years after a nuclear war leaves the Earth a wasteland.
Players navigate the destroyed world and the different factions that live within it.
Justin, who plays Robert House, the ruler of the New Vegas, spoke to BBC Newsbeat at the show's series two premiere in London about how he feel this is part of its appeal.
"We all have the knowledge that nuclear weaponry exists and we rely on, hopefully, intelligent people not to use them," he says.
