Katrina Law is an American actress. She is known for playing the roles of Mira on 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 Jessica Knight on the CBS series NCIS.
Early life and education Law 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. She graduated from the Richard Stockton College of New Jersey with a B.A. in Performing Arts (Theatre Performance) in 1999.
Career Law worked alongside director Adrian Picardi with producers Eric Ro and Don Le, to create a low budget web series called The Resistance. Picardi was the series' official creator and director. The show was later picked up by Starz which led to Law's casting in Spartacus: Blood and Sand in 2009. In 2011, Law completed an action-oriented project called 3 Minutes with director Ross Ching, producers Don Le and George Wang, starring Harry Shum Jr., Stephen "tWitch" Boss (the runner up on season 4 of Fox's So You Think You Can Dance), and herself.
From 2014 to 2020, she had a recurring role on The CW television series Arrow as Nyssa al Ghul, the daughter of the notorious leader of the League of Assassins, Ra's al Ghul.
In 2019, Law was cast as co-lead in the CBS pilot Alive, as medical examiner Elizabeth Lavenza, whose husband Mark Escher (Ryan Phillipe) is brought back to life by the mysterious Dr Frankenstein (Aaron Staton). Later that year she joined the cast of CBS's Hawaii Five-0 for the series' tenth season. In March 2021, Law was cast in the eighteenth season of NCIS in the role of Jessica Knight. She appeared in the final two episodes of the season with the potential to become a series regular if the series is renewed for a nineteenth season; it was later confirmed that Law would become a series regular beginning with the nineteenth season. In January 2022, it was announced that Law's NCIS character would crossover to NCIS: Hawaiʻi for an episode.
Personal life Law married actor Keith Andreen in January 2013. In December 2018, she gave birth to their daughter. Law filed for divorce on August 11, 2025.
Filmography
Film Year Title Role Notes 2000 Lucky Numbers Teen Girl also known as Lucky Number (Japan: English title) 2001 Bottomfeeders Ursula 2002 Emmett's Mark Francine also known as Killing Emmett Young (video title) 2005 Choker Santo also known as Disturbance (DVD box title) 2006 All In Dealer No. 1 2007 A New Tomorrow Katherine Schatz 2008 Stiletto Biker Chick No. 2 Direct-to-video film; also known as Velvet Spider (Japan: English title) 2009 Alpha Males Experiment Jenna originally titled Knuckle Draggers 2010 The Grind Jemma 2011 3 Minutes Female Hunter Short film2015 Death Valley Annie Gunn Checkmate Katana 2017 Darkness Rising Izzy 2024 Werewolves Dr. Amy Chen Mafiosa Alex Johnson produced in 2010, but not released
Television + Year Title Role Notes 2001 Third Watch Ani Bailey Episode: "Man Enough" 2002 Reba Morgan Brooks Episode: "The King and I" 2003 44 Minutes: The North Hollywood Shoot-Out Kate Television movie 2006 If You Lived Here, You'd Be Home Now Television movie 2007 The Rookie: CTU Kate Wyman Web series (spin-off of 24); main role (season 3), 6 episodes 2009 Chuck Alexis Episode: "Chuck Versus the Beefcake"2010 Spartacus: Blood and Sand Mira Recurring role, 5 episodes Legend of the Seeker Garren the Mord Sith Episodes: "Walter", "Extinction", and "Tears" The Resistance Lana Web series; main role, 8 episodes2012 Spartacus: Vengeance Mira Main role, 10 episodesCSI: Miami"Assassin"Episode: "Law and Disorder"2013 Chosen Amber 2 episodes Snow Bride Greta Kaine Television movie (Hallmark Channel) 2014–2020 Arrow Nyssa al Ghul Recurring role, 20 episodes2015 12 Gifts of Christmas Anna Parisi Television movie (Hallmark Channel) Guilt Natalie Original television pilot (unaired) 2016 Legends of Tomorrow Nyssa al Ghul Episode: "River of Time" 2017 Training Day Detective Rebecca Lee Main role 2018–2019 The Oath Karen Beach Main role 2018–2020 Sacred Lies Miss Bailey Recurring role 2019–2020 Hawaii Five-0Quinn Liu Main role (season 10)2020 Magnum P.I. Episode: "Desperate Measures" Christmas with the Darlings Jessica Lew Television movie (Hallmark Channel) 2021–present NCISJessica Knight Guest role (season 18); main role (season 19–present) 2022 NCIS: Hawaiʻi Guest role, 2 episodes
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