Dagmara Domińczyk (born July 17, 1976) is a Polish-American actress and author. She's best known for her film roles as Mercedès Iguanada in The Count of Monte Cristo (2002), Agnes Gebhard in Kinsey, Marguerite in The Five People You Meet in Heaven, Suzanne in Running with Scissors, Belva in The Immigrant, and Elizabeth Taylor in Big Stone Gap. Her best known TV roles are as Elle Sellwyn on Hello Tomorrow!, Erika Jensen on We Own This City, and Karolina Novotney on Succession. She's been married to actor Patrick Wilson since 2005 and they have 2 children. Her sister is actress Marika Domińczyk.