Ewen Bremner has joined the cast of the sci-fi thriller “Snow Piercer.”Cast already includes Chris Evans, Jamie Bell, Tilda Swinton and Octavia Spencer. Bong Joon-ho is helming from a script he co-penned with Kelly Masterson; Park Chan-wook is producing. Set in a world covered in snow and ice, the story follows a train full of travelers who struggle to co-exist. Bremner plays a father who joins forces with Evans’ character to save his kidnapped son. He is repped by Global Artists Agency, Independent Talent Group and Alchemy Entertainment.