"I love that film and I think because it was pushed into the following year and never got an Oscar campaign, I think that’s one of the reasons it hasn’t been noticed as much as it should. It’s a beauty. It was so moving, the concept that they’re all desperately trying to help him and he thinks they’re evil. It was such a beautiful idea. I loved working on that film, and Marty’s ideas about how to use 20th-century classical music were brilliant. But a very painful film. Very painful for them to make. Again, Leo was absolutely devoted to it. That was a grueling part. Several times, I’ve seen Leo insist on working when he had 106 degree fever, and he actually passed out on camera, and I think it was on that film. He just wanted to make sure that they didn’t lose a day shooting. So he was incredibly devoted to that."
Thelma Schoonmaker on Martin Scorsese and Leonardo DiCaprio’s relationship and work ethic during the making of Shutter Island