Dagmara Domińczyk dohMEENchik born July 17 1976 is a PolishAmerican actress and author Shes best known for her roles as Mercedès Iguanada in The Count of Monte Cristo 2002 Tania Asher in Rock Star 2001 Agnes Gebhard in Kinsey 2004 Marguerite in The Five People You Meet in Heaven 2004 Katrina on WBs The Bedford Diaries Suzanne in Running with Scissors 2006 Belva in The Immigrant 2013 Elizabeth Taylor in Big Stone Gap 2013 Stacy in Lets Kill Wards Wife 2014 Karolina Novotney on HBOs Succession Ellen in The Assistant 2020 Erika Jensen on HBOs We Own This City 2022 and Elle Sellwyn on AppleTVs Hello Tomorrow 2023 In 2013 she released her novel The Lullaby of Polish Girls She has been married to actor Patrick Wilson since 2005 and they have two sons Her sisters are actress Marika Domińczyk and actress Veronika Domińczyk