Plus: Can you tell what year this season is set in?
- Next gallery - Which shows earned the most Emmy nominations? 'The Pacific,' 'Glee,' 'Mad Men,' more
- Previous gallery - Meet the 'Big Brother 12' houseguests
"Mad Men" is back for season four
Everyone's favorite agency professionals are back for more dramatic ups and downs in the world of 1960's advertising. It's always a mystery to figure out exactly when each season of "Mad Men" takes place. Can you decipher the clues from the following new photos and figure out what year of Don Drapper's life we're following now?
[Left, Christina Hendricks as Joan Harris, John Slattery as Roger Sterling, January Jones as Betty Draper, Jared Harris as Lane Pryce, Vincent Kartheiser as Pete Campbell, Jon Hamm as Don Draper and Elisabeth Moss as Peggy Olson.]