Christopher Nolan’s Interstellar has found its final major piece in Wes Bentley, who’s negotiating to take on a secret part in a secretive movie. Bentley would join Matthew McConaughey, Anne Hathaway, Jessica Chastain, Michael Caine, Casey Affleck, and Topher Grace. Bentley was recently cast as the lead in Ryan Murphy’s HBO pilot Open, but it shouldn’t be a problem since he’s used to being busy.