Walker stars in Brick Mansions, the last completed movie he makes before his death. Brick Mansions is a French-Canadian action thriller and is a remake of the 2004 French film District 13. Walker’s character is Damien Collier, an undercover cop who navigates a dangerous neighborhood in a dystopian Detroit. The city is surrounded by a containment wall and only the most feared criminals live in the abandoned brick mansions still standing. Collier works with an ex-con to bring down a crime lord bent on devastating the entire city.