What are the plot complications in "A Doll's House"?
The conflict of the story is Nora's crime of forgery and the threat that Krogstad poses when he announces he is going to tell Torvald about the loan. Nora wants to keep her husband and her marriage happy. She understands that Torvald will be upset because she took a loan, something which his is against; she doesn't understand that Torvald will be so upset about his reputation.
Nora may have been able to keep things under wraps. She may have been able to convince Torvald to keep Krogstad on at the bank, which would keep her secret. However, complications arise. Mrs. Linde, Nora's friend, arrives and wants the job. Torvald is inclined to give it to her. Another complication is Krogstad and Torvald's history. They knew each other in school days and Torvald is biased against him from past history. Torvald knows of Krogstad's past indiscretions, and Torvlad resents the familiarity with which Krogstad still addresses him. Things come to a head, and Torvald reveals his concern - not for Nora - but for his status. Though the marriage might still have survived Nora's crime, Torvald's revelation alerts Nora to her own unhappiness, and she leaves in the end.
Some years ago , Nora forged a loan application to take her husband away on a vacation for medical reasons. She does not tell Torvald how she got the money. A man by the name of Krogstad is aware of the forgery. The complication is that he works for the bank that Nora's husband, Torvald is a director. Torvald has discovered that Krogstad is guilty of forgery himself, and is going to fire him.
Krogstad insists she stop her husband from terminating him, or he will make her crime public. When she is unable to stop Torvald, Krogstad leaves a letter explaining her deception. Nora atempts numerous distractions to put off Torvald's discovery of her lie.