Whenever Elizabeth Debicki talks about playing Princess Diana in Netflix’s “The Crown,” she inevitably circles back to something that the series’ creator, Peter Morgan, has said: If she had not been interested in the part, he would have had to write the show differently, with the People’s Princess taking up significantly less screen time. “I’ve heard him say this a few times at panels and things, and I always think, Is that true?” she said. “It’s the complete opposite to me. I think, How did you know that I could do that? How did you trust me so much with such a huge part?”
The spark of royal magnetism that Morgan sensed in Debicki proved perspicacious.