The season opens with at the height of his powers, yet haunted by the ghosts of "Dick Whitman." While he masterfully pitches the American Airlines account following a tragic plane crash, his personal life is a series of controlled skids. He is a man perpetually looking for an exit sign, finding it in the arms of Bobbie Barrett , the sharp-tongued manager of a crude comedian. Their affair isn't just a betrayal of Betty; it’s a collision of two predators who recognize each other’s hollow centers. The Rise: Peggy and the Glass Ceiling

The season ends not with a bang, but with a silhouette. Don returns to a house that may no longer be a home, standing in the doorway as the sirens of the era begin to wail.

While Don spirals, ascends. No longer the "secretary from Brooklyn," she navigates the predatory waters of the creative department with a quiet, steely resolve. She finds an unlikely mentor in Joan Holloway , though their relationship remains a cold war of mutual respect and deep-seated resentment. Peggy’s journey this season is defined by the secret she left behind in the Season 1 finale—a weight that makes her more focused, and perhaps more dangerous, than any man in the room. The Fall: Betty’s Awakening