While Don continues his affair with Sylvia, Pete's latest infidelity threatens his marriage. Meanwhile, Peggy's icy relationship with her new staff continues, but she also gets an unlikely tip on a potential new client.
Casts:
Jon Hamm, Elisabeth Moss, Vincent Kartheiser, January Jones, Christina Hendricks, Aaron Staton, Rich Sommer, Kiernan Shipka, Kevin Rahm, Christopher Stanley, Ben Feldman, Mason Vale Cotton, John Slattery, Jessica Paré, Robert Morse, Jay R. Ferguson, Paul Johansson, H. Richard Greene