Christopher Nolan is famous for being a “serious” director. He is responsible for his Oscar-winning direction of Oppenheimer and for one of the best superhero movies ever, The Dark Knight. He also has a reputation for being incredibly particular about how he makes films, from insisting on theatrical experiences to shooting projects like his upcoming 2026 calendar release, The Odyssey, entirely on IMAX cameras. And I'm not even getting into those alleged chair bans on set. Basically, it should come as no surprise that his script's security has a bit of cinematic weirdness, too. According to Jessica Chastain, he only sends his actors red scripts.In an Instagram video shared by director and photographer Aidan Tanner, Jessica Chastain broke down some of her marked-up scripts from Interstellar and The Eyes of Tammy Faye. She confirmed one of Nolan's behind-the-scenes habits: he sends his actors red scripts. The choice was originally meant to prevent copies from being made, but now it's also seemingly just his thing. A post shared by Aidan Tanner (@aidan)A photo posted by on As the Zero Dark Thirty star flipped through the script in the clip, she paused to point out the small countermeasure the filmmaker takes to protect his stories. So like, isn’t this crazy? [holding up a giant stack of papers]. [Pulling a bound book off the shelf] Christopher Nolan only sends you red scripts. See? So you can’t copy them. Talk about a Christopher Nolan detail that obviously feels both practical and slightly absurd in the best way. Red paper makes a script harder to photocopy clearly, which helps protect the story from leaking. It also makes the object itself feel special, almost like a classified document from some secret film bunker.For a movie like Interstellar, streaming with a Paramount+ subscription, I get it. Nolan’s best films often depend on carefully controlled information. The audience is not supposed to know too much too soon. Whether he is bending time, hiding a reveal or letting a character’s emotional arc snap into place late in the story, the experience is built around discovery. A leaked script could ruin some of that before the movie ever reaches theaters.(Image credit: Paramount Pictures, Warner Bros. Pictures)Still, what I love most about Chastain’s clip is that it quickly becomes less about Nolan’s secrecy and more about her acting process. The red script was the flashy piece of trivia, but the markings were where the real work was happening. She explained the changes she made to a scene in the 2014 sci-fi thriller, Interstellar: Here’s an example. I just felt like that was too formal. I don’t think I said, 'Hello, Dad.' So, I think I said, 'Hey, Dad. You sonofabitch.' But then also I cross out sometimes directions, so I feel free that I can do whatever I want. Like I crossed out, ‘Starts Crying.’ I mean, I just wanna see what’s gonna happen in the moment.Chastain was not just reading the script as written and treating every direction like a commandment. She was adjusting the dialogue so it sounded more alive to her. She was crossing out emotional instructions because she did not want to pre-plan the moment too tightly. That little “Starts Crying” note says a lot. Some actors might use that as a target. She saw it as something that could get in the way.There is also a funny contrast here. The Prestige filmmaker can do everything possible to keep a script from being copied, passed around or spoiled -- though as Cillian Murphy wryly noted to 60 Minutes in a separate Oppenheimer interview about the red scripts, "But I don’t know who photocopies in 2024." Once that script reaches an actor, he or she seems willing to let it become something more personal. The red pages show how carefully the moviemaker protects his stories, while Chastain’s notes show how an actor helps make those stories breathe. Good filmmaking needs both sides of that equation: a director protective enough to guard the vision, and wise enough to give collaborators room to explore it.Christopher Nolan’s next big film, The Odyssey, lands in theaters on July 17.