The Helmer children return from playing in the snow, adding domestic warmth and prompting Nora’s frantic attempts to conceal Krogstad’s presence.

Doctor Rank visits the Helmer household, comments on societal corruption, and is aware of Krogstad’s past crime. Visits the Helmers, jokes about costumes, and later reveals his impending death via black‑crossed cards.

Mrs. Linde returns to town, widowed and seeking employment, and learns of Nora’s secret loan. Negotiates with Krogstad about work and partnership, offering to be mother to his children.

Krogstad, a former clerk now at the bank, threatens Nora with blackmail over her secret debt. Discusses with Mrs. Linde, learns Nora's secret is exposed and plans to retrieve his letter but is thwarted.

Nora is the central heroine, preparing for Christmas, hiding a secret loan, and confronting Krogstad's blackmail. Resists leaving earlier, later decides to leave Torvald and the children, declaring emancipation.

Torvald is promoted to bank manager, worries about morality, and pressures Nora to keep Krogstad away. Discovers letters, believes Dr. Rank is dying, later reads Krogstad's bond, thinks crises are resolved, then confronts Nora about her departure.

Nurse who brings the fancy‑dress box and discusses child‑care with Nora.

Maid who delivers Torvald's letter and money to the bank and later serves dinner. Maid Helen brings a light and a letter to Torvald.