Collaborators
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.

Cast
Jon HammDon Draper
Elisabeth MossPeggy Olson
Vincent KartheiserPete Campbell
January JonesBetty Draper
Christina HendricksJoan Holloway
Aaron StatonKen Cosgrove
Rich SommerHarry Crane
Kiernan ShipkaSally Draper
Kevin RahmTed Chaough
Christopher StanleyHenry FrancisMad Men on tvt

