After helping Marian at a train station after her purse is stolen, Peggy finds her life entwined with Marian and her aunts'. She spends much of the season working as Agnes's private secretary while also pursuing her career as a journalist. When she visits her well-to-do family in Brooklyn, it's clear that there is a fraught past, especially between her and her father.
As the season goes on, the truth is revealed: Peggy was once married, and when she nearly died (and her child did die) in childbirth, her father forced her husband to annul the marriage. In the finale, she learns an even more terrible truth: her son survived, and her father deliberately hid it from her. Peggy and her mother set out to find what has become of her son.
