Only 20 of 600 People on Dunkirk Got to Read the Script
Copies were marked with actors' names, and Nolan hand delivers scripts and waits over tea to take them back.
Founders · #426 How Obsession Built Christopher NolanDirector Christopher Nolan guards his movies so closely that only 20 people out of a crew of more than 600 got to read the screenplay for Dunkirk.
The copies that did circulate were kept on set and marked with each actor's name, so a missing copy could be traced back.
Nolan also recruited actors in person. When an actor asked to see a script, Nolan arrived at the house with a copy, sat over tea while it was read, then carried it back home.
He holds the set the same way. He doesn't use a second unit and films everything himself. Actor Matthew McConaughey said, "Minds don't wander on a Chris Nolan set."
Questions people ask
Why keep a script that secret?
Generally, directors often guard plots closely because a leak could spoil the surprise that draws people to theaters, and could allow a similar idea to be copied elsewhere. Keeping the circle small could also strengthen a director's hand, since the studio has to go through him to know what the movie really is.
What is a second unit?
A second unit is a smaller, separate crew that films shots the main director does not oversee, such as stunts, establishing views, or closeups. Big movies use one to save time by shooting in two places at once. Nolan skips it, so he personally directs nearly every shot.
Do watermarked scripts actually stop leaks?
They do not make copying impossible, but they make the source easy to find. Each copy has a unique, often invisible mark tied to one person, so a photographed page posted online points back to that recipient. The real power is deterrence, since everyone handling the script knows a leak will be traced to them.