WELCOME TO MARWEN Trailer Premiere Don’t miss the first WELCOME TO MARWEN trailer! The film, directed by Robert Zemeckis (Forrest Gump, Back to the Future), stars Steve Carell, Leslie Mann, Eiza González, Diane Kruger, Gwendoline Christie, and Janelle Monáe. WELCOME TO MARWEN will be released in theaters on November 21. A victim of a brutal attack finds a unique and beautiful therapeutic outlet to help him through his recovery process.