Olivia, the heiress of the Harper family, is brutally murdered in a arson attack orchestrated by her husband Carson and his friend Lillian. She is reborn as Lillian's sister, Edith. Disguised, she infiltrates the family to seek revenge, stealing evidence and driving a wedge between the two, using their desires to sow discord and alienation. A series of elaborate schemes unfold at her memorial service and press conference, gradually revealing their crimes. Carson is ultimately caught red-handed and sentenced to death. Afterward, Olivia lets go of her hatred and reconciles with Marcus and Claire at the memorial service for their loved ones.
