I was putting together my crew and they brought me a man named Rolf, who was the guy who pulled the f—ing lever on the gas chamber. And I said the only way I ever allow him near me, no less interview him, would be if he understood that I am concerned about the accuracy of the film and it would be because I need some information. But I said to my production manager, “I’m not sure I can handle it.” After about six weeks of pretty good meditation, I talked to the guy. The question nobody could answer, that the victims couldn’t answer, was: Where were they [when they] were waiting for the ones ahead of them in the gas chambers? How long were they waiting? Where were they standing? Was there an adjacent room? Did they sit? What kind of time was involved? The torture here was waiting! And they couldn’t dull the sound effects, the screaming. Could I get that information from this man? I wanted to wear a mask so he wouldn’t know it was me. When he came into the office and sat down, I thought, This poor human being. I’m sitting there and it was five after nine at night by the time we were done talking and I was…undone. But he gave me the bottom of his f—ing soul! He wanted penance. I kept looking at his right hand. I was going to ask him which hand did you do it with? I couldn’t do it.