https://variety.com/2019/tv/features/the-passage-boss-breaks-down-finale-brad-amy-100-year-time-jump-who-lives-who-dies-1203154217/

“For the people who read the book and love the book, which I count myself one of, we wanted to show the wall of the Colony,” says Liz Heldens of the drama thriller based on the Justin Cronin trilogy of novels.