Don receives a troubling letter. A risky venture entails a new future for Peggy. Roger gets an unexpected phone call. Pete butts heads with Cutler.
Peggy determinedly collects research for a pitch. Pete is invited to join an exclusive club. Joan looks forward to spending time with her friend.
Don has a visitor from his past. Stan embarrasses a superior. Peggy helps Ginsberg with a problem. Harry finds that he has a new ally at the agency.
Sterling Cooper & Partners prepares for a guest. Don calls an old friend. Roger confronts problems at home. Pete underestimates Peggy.
Don takes an impromptu trip. Betty has lunch with a friend. Harry lobbies for a cause. The partners consider a questionable asset.
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