Wrenn Schmidt is an American actress. She is most known for her roles in the television series Boardwalk Empire as Julia Sagorsky (2012–2013) and had a small recurring role on The Americans as Kate (2014), and on season 4 of Person of Interest as Dr Iris Campbell. She most recently starred in the 2016 indie film The Good Catholic, and she also starred in the 2014 horror film Preservation.