For three seasons of this devastating drama set in 1960s ad land, Peggy has been the quiet heroine, smashing the glass ceiling – but all too often she has been overshadowed by style icons Betty and Joan. No more. Don Draper is still top dog, but Peggy is the rock – and she's taking no prisoners when it comes to relationships either. The writing remains top-drawer, the acting superlative, and Don's descent devastating. Unmissable.