Complex sentence: Two audience members at a Moscow screening recognized the story, after which East German journalists from the Berlin newspaper, "Berliner Zeitung Am Abend" tracked Zweig down in Lyon, where Zweig had just resumed his university studies.
Split into simpler sentences: Two audience members at a Moscow screening recognized the story. Subsequently, journalists from the East Berlin newspaper, "Berliner Zeitung Am Abend" went looking for Zweig, finding him in Lyon, where he had just resumed his university studies.