“Don Altobello: You are my 'ace in the hole,' as we say in America. I have a stone in my shoe. You can remove it. Mosca: Only one stone? Don Altobello: [regarding Michael] It's dangerous. A famous man. You will have to take precautions. Mosca: Tell me what to do. Then I will tell you my price.”
— Mario Puzo, Francis Ford Coppola, Don Altobello, Eli Wallach, imdb.com