Playing an extra in “The Young Pope” teaches me the cardinal rules of film business

I play an American cardinal, one of the many nameless bodies that form a fluid red or black background as Jude Law maneuvers through scenes. We’re shooting a breakfast scene and I’m sitting two chairs down from a cardinal who’s about to die. My job is to eat slowly, look over calmly and appear expressionless as the cardinal falls to the floor. But did I eat too many grapes? Could Sorrentino tell I was choking? I KNEW I should’ve eaten the breakfast roll!
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