Set seven years after the world has become a frozen wasteland, Snowpiercer centers on the remnants of humanity, who inhabit a gigantic, perpetually moving train that circles the globe, all as class warfare, social injustice and the politics of survival are called into question. Sumner will play Bess Till, a brakeman who is part of the train’s security force who suddenly finds herself caught up in a mystery that changes the status quo.
Sumner’s previous TV credits include recurring roles on Showtime’s The Borgias and AMC’s one-and-done Low Winter Sun. Her casting comes just one day after it was announced that Academy Award winner Jennifer Connelly has signed on for the in-the-works basic cable series, which also stars Tony-winning Hamilton alum Daveed Diggs.
TNT has thus far ordered only a pilot, written by Josh Friedman (Terminator: The Sarah Connor Chronicles) and to be directed by Doctor Strange helmer Scott Derrickson.