Biography Rosemarie DeWitt

Actress Rosemarie DeWitt premiered onscreen in the early to mid-2000s and essayed a series of bit roles -- initially in A-list features such as Cinderella Man (2005) and Off the Black (2006). She scored a lead opposite Ron Livingston on the small screen, as a federal agent in the hostage-crisis drama Standoff (2006), but unfortunately, that program folded after a rather short life span, and DeWitt returned to supporting turns -- notably a colorful characterization as Midge Daniels, the bohemian mistress of a successful ad executive during the early '60s on AMC's serialized drama Mad Men (2007).