Katrina Law

• Name — Katrina Law • Born — between April 1976 and April 1977 • Birthplace — Philadelphia, Pennsylvania, U.S. • Alma Mater — Stockton University (BA) • Occupation — Actress • Years Active — 2000–present • Children — 1

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. In 1995, 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.

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. • Illustration — Law in 2014 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.

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. Law has an older brother, Kenneth Houseknecht, who in April 1988, at age 14, murdered a neighbor girl who was 12 years old. In July 2026 Law testified via Zoom on her brother's behalf in his attempt to be released from prison.

• 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 • 2010 — Legend of the Seeker — Garren the Mord Sith — Episodes: "Walter", "Extinction", and "Tears" • 2010 — The Resistance — Lana — Web series; main role, 8 episodes • 2012 — Spartacus: Vengeance — Mira — Main role, 10 episodes • 2012 — CSI: Miami — "Assassin" — Episode: "Law and Disorder" • 2013 — Chosen — Amber — 2 episodes • 2013 — Snow Bride — Greta Kaine — Television movie (Hallmark Channel) • 2014–2020 — Arrow — Nyssa al Ghul — Recurring role, 20 episodes • 2015 — 12 Gifts of Christmas — Anna Parisi — Television movie (Hallmark Channel) • 2015 — 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-0 — Quinn Liu — Main role (season 10) • 2020 — Magnum P.I. — Quinn Liu — Episode: "Desperate Measures" • 2020 — Christmas with the Darlings — Jessica Lew — Television movie (Hallmark Channel) • 2021–present — NCIS — Jessica Knight — Guest role (season 18); main role (season 19 –present) • 2022 — NCIS: Hawaiʻi — Jessica Knight — Guest role, 2 episodes