Scene 1: Lulu and Alwa are now living in Paris. The scene is a party in a casino. Lulu is being forced by blackmail to work in a Cairo brothel by the Acrobat and a pimp. The police still want her for Dr. Schön's murder and the Acrobat and the pimp say to her that they will take her to the police if she does not do as they say. Schigolch arrives, asking for money. She is persuaded to lure the Acrobat away to a hotel and murder him. After they have gone, news arrives that the railway company has run out of money. The guests have all got money in the company. The party quickly breaks up, and in the confusion, Lulu manages to change clothes with a young man. She escapes with Alwa just before the police arrive to catch her.