Villagers come to Luisa and tell her that her father has been seen being dragged away in chains. Then Wurm arrives and confirms that Miller is to be executed. But he offers her a bargain: her father's freedom in exchange for a letter in which Luisa declares her love for Wurm and states that she has tricked Rodolfo. Initially resisting ("Tu puniscimi, O Signore" / "Punish me, o Lord"), she gives way and writes the letter at the same time being warned that she must keep up the pretense of voluntarily writing the letter and being in love with Wurm. Cursing him ("A brani, a brani, o perfido" / "O perfidious wretch"), Luisa wants only to die.