Plus: Can you tell what year this season is set in?
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The cast of "Mad Men" season four
The cast of "Mad Men": Robert Morse as Bert Cooper, Jared Harris as Lane Pryce, John Slattery as Roger Sterling, January Jones as Betty Draper, Jon Hamm as Don Draper, Vincent Kartheiser as Pete Campbell, Elisabeth Moss as Peggy Olson, Christina Hendricks as Joan Harris, Aaron Staton as Ken Cosgrove and Rich Sommer as Harry Crane.