Toward the end of act 1 of Henrik Ibsen's A Doll's House, Nora Helmer is confronted by a low-level bank employee and former attorney, Nils Krogstad, who appeals to her to intercede on his behalf with her husband, Torvald, the bank manager, so Krogstad can keep his job at the bank from which he's about to be fired. If Nora refuses to intercede, Krogstad threatens to tell Torvald that it was he who loaned Nora money for Torvald's convalescence in Italy and that Nora forged her father's signature on the loan documents.
Nora's efforts on Krogstad's behalf fail, and in act 2, Krogstad is dismissed from his position at the bank. Krogstad tells Nora that instead of publicly revealing her forgery, he's going to use the information to blackmail Torvald into reinstating him in his position at the bank. Krogstad leaves a letter to that effect in Torvald's mailbox.
Nora confides her dire situation to Kristine Linde, Nora's childhood friend, who was long ago romantically involved with Nils Krogstad.
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