Don makes contact with someone from his past. Roger has issues to dea with back at home. Peggy feels as though she's underestimated.

Cast: Jon Hamm, Elisabeth Moss, Vincent Kartheiser, January Jones, Christina Hendricks, Aaron Staton, Rich Sommer, Kiernan Shipka, Jessica Paré, Kevin Rahm, Christopher Stanley, Jay R. Ferguson, Ben Feldman, Mason Vale Cotton, Robert Morse