Meister finds a file on Carla which shows that she suffered from amnesia attacks during the full moon; he thinks she is Megaera but Paul refuses to believe it. They find Carla outside struggling with Ratoff. She tells Paul it's too late to go away. The door bell rings and Paul hides Carla. Namaroff and the police search the house but can't find her as Paul has sent her to catch the train to Leipzig. She never arrives. Meister locks Paul in his room but he climbs out of the window.