Fiona Dourif (born October 30, 1981) is an American actress and producer. She is mostly known for her role as Nica Pierce in the Child's Play movies and the Chucky TV series. She is also known for her role as Bart Curlish in BBC America's Dirk Gently's Holistic Detective Agency and as the young Diane Jones in Dustin Lance Black's When We Rise. She has appeared in Showtime's Shameless and in a recurring role on NBC's The Blacklist.