Katrina Law is an American actress. She is known for playing the roles of Mira in the Starz television series, Spartacus: Blood and Sand and Spartacus: Vengeance, Nyssa al Ghul on The CW television series Arrow, Karen Beach on the Sony Crackle series The Oath, Quinn Liu on the CBS series Hawaii Five-0, and Special Agent Jessica Knight on NCIS. She was born in Philadelphia, and grew up in Deptford Township, New Jersey. Her mother is Taiwanese and her father is of German and Italian descent. As a teenager, she was crowned Miss New Jersey Teen USA. Law married fellow actor Keith Andreen in January 2013. In December 2018, she gave birth to a daughter. They Separated, pending divorce July 2025 She had multiple fully nude scenes in the TV series "Spartacus".