 Andrea ingratiates himself to Danglars, who betroths his daughter Eugénie to Andrea (not knowing they are half-siblings) after cancelling her engagement to Albert.Meanwhile, Caderousse blackmails Andrea, threatening to reveal his past if he doesn't share his new-found wealth.Cornered by "Abbé Busoni" while attempting to rob the Count's house, Caderousse begs to be given another chance.