Julia Garner is an American actress. She has appeared in the films Martha Marcy May Marlene, The Perks of Being a Wallflower, Sin City: A Dame to Kill For, and We Are What We Are.
In a future where a failed global-warming experiment kills off most life on the planet, a class system evolves aboard the Snowpiercer, a train that travels around the globe via a perpetual-motion engine.