Elizabeth Marvel. Actress: True Grit - Vergeltung. Elizabeth Marvel is an American actress. Her most prominent roles include Det. Nancy Parras on The District, Solicitor General Heather Dunbar on House of Cards, and President Elizabeth Keane on Homeland. Film roles include Burn After Reading; Synecdoche, New York; True Grit; Lincoln (alongside husband Bill Camp); and The Meyerowitz Stories. She also had a recurring role in season 2 of the FX...