Prince Djem (an extraordinary turn by actor and musician Moez Kamoun ) arrives not as a supplicant, but as a philosopher-king in chains. He speaks five languages, quotes Seneca, and has more dignity in his little finger than the entire Roman curia. Over a dinner of roasted peacock, Djem quietly dismantles Rodrigo’s theology: “Your Christ said ‘love your enemy.’ My brother pays you to hate me. Who is the true infidel?”