Katrina Law (born September 30, 1985) is an American actress from Philadelphia, Pennsylvania. She is best known for playing Mira in Spartacus: Blood and Sand, Nyssa al Ghul in Arrow, and Special Agent Jessica Knight in NCIS.
She also holds a black belt in taekwondo.
Who is Katrina Law?
Katrina Law is an American actress with a career spanning over two decades in television and film. She is known for bringing strength, physicality, and emotional depth to every role she takes on.
Her path to Hollywood was built one guest spot at a time.
Per IMDb, she has appeared in major network productions including Spartacus: Blood and Sand (Starz), Arrow (The CW), Hawaii Five-0 (CBS), and NCIS (CBS). Additionally, she appeared in the Arrowverse spinoff Legends of Tomorrow and in the Sony Crackle series The Oath. Furthermore, her black belt in taekwondo has made her a natural fit for action-heavy roles throughout her career. Overall, she is widely regarded as one of television’s most physically capable and versatile dramatic actresses.
Early Life of Katrina Law
Katrina Law was born on September 30, 1985, in Philadelphia, Pennsylvania. She was raised in Deptford Township, New Jersey.
Her upbringing was shaped by two very different cultural worlds.
Her father is of German and Italian descent and served in the U.S. Armed Forces. Her mother is Taiwanese and practices Buddhism. That unique blend of Catholic and Buddhist traditions under one roof taught her tolerance, patience, and humor from an early age.
As a child, her mother enrolled her in a wide range of activities. She took dancing lessons, gymnastics, karate, and soccer. Those early physical disciplines laid the foundation for the action career that would define her adult life.
Katrina Law Age
Katrina Law is 40 years old as of June 4, 2026, born on September 30, 1985. Her zodiac sign is Libra, a sign associated with balance, charm, and a natural ease in front of an audience. At 40, she continues as a series regular on one of CBS’s highest-rated procedural dramas.
Katrina Law Ethnicity and Nationality
Law holds American nationality, born in Philadelphia and raised in New Jersey. She is of mixed ethnicity, with German, Italian, and Taiwanese heritage. Her multicultural background has been a defining part of her public identity, giving her a distinctive and versatile screen presence that sets her apart from many of her peers.
Katrina Law Height and Weight
Katrina Law stands at 5 feet 8 inches (1.73 meters) tall. Her weight is not publicly confirmed. Her athletic build, combined with her taekwondo black belt, gives her a commanding physical presence that makes her particularly suited for action-driven television roles.
Katrina Law Education
Law attended Deptford Township High School in New Jersey, where she was a member of the National Honors Society. She was also crowned Miss New Jersey Teen USA during her teenage years and represented the state at the national finals on television.
That early spotlight gave her a taste of performing under pressure.
She went on to earn a theater degree from Stockton University (formerly Richard Stockton College of New Jersey). After graduating, she continued her acting education in Philadelphia and New York City, deepening both her craft and her understanding of the business side of the industry.
Katrina Law Career
Early Roles and SAG Eligibility
Law’s professional acting career began in 2000. Per IMDb, she earned her Screen Actors Guild eligibility on the set of Lucky Numbers (2000), directed by Nora Ephron and starring John Travolta. That same year in New York, she booked a guest star role on NBC’s Third Watch, which allowed her to formally join SAG.
She was building her resume carefully, role by role.
Early television credits included appearances on CSI: Miami (2002), Chuck (NBC), and a three-episode arc as Mord’Sith Garen in Legend of the Seeker (ABC). She also appeared in the 24 spinoff web series The Rookie: CTU and in a number of independent films during this period. Additionally, she built stage experience in Philadelphia and New York, sharpening her technique for what was to come.
Spartacus and Breakthrough Recognition
Law’s breakthrough came in 2010 when she was cast as Mira in the Starz historical drama Spartacus: Blood and Sand. The role required intense physical training and emotional range.
She delivered on both.
Mira was a slave-turned-rebel who became one of the show’s most beloved characters. Law reprised the role in Spartacus: Vengeance in 2012. The series established her as a leading action actress on television. Furthermore, her performance earned critical recognition and significantly raised her profile across the industry.
Arrow and the Arrowverse
In 2014, Law debuted as Nyssa al Ghul in The CW’s superhero series Arrow. She played the role from 2014 through 2018, becoming a fan favorite for her portrayal of the morally complex daughter of Ra’s al Ghul.
The role brought her a devoted new fanbase.
She extended the character into the Arrowverse spinoff Legends of Tomorrow in 2016 and 2017. Additionally, she took on the lead role of Detective Rebecca Lee in CBS’s Training Day in 2017 and played Quinn Liu in the final season of Hawaii Five-0 in 2019 and 2020. Furthermore, she appeared as Karen Beach in the Sony Crackle series The Oath.
NCIS and Ongoing Career
In March 2021, Law was cast as Special Agent Jessica Knight in the 18th season of NCIS. She was promoted to series regular for Season 19 as part of the show’s transition following Mark Harmon’s departure.
She stepped into one of television’s most-watched shows and made the role her own.
Per Grokipedia, as of November 2025, she continues on NCIS in its 23rd season, portraying forensic specialist Jessica Knight. Her character appeared in a crossover episode of NCIS: Hawai’i in 2022, expanding her presence across the franchise. Overall, her work on NCIS has given her the longest sustained series regular role of her career to date.
Katrina Law Ex-Husband
Katrina Law was married to actor and director Keith Andreen on January 5, 2013. Andreen also served as her acting coach beginning in 2009, which Law credited as the year she “really started booking everything.”
Their professional and personal lives were deeply intertwined.
On August 11, 2025, Law filed for divorce in Los Angeles County Superior Court, citing irreconcilable differences. She listed July 7, 2025 as the date of separation. Law requested joint legal custody and primary physical custody of their daughter, with visitation to be determined. She also requested that the court terminate spousal support for both parties.
Katrina Law Children
Law and Andreen welcomed their only child, a daughter named Kinley Malika Andreen, in December 2018.
Kinley has occasionally appeared in family moments shared on Law’s social media.
Law has spoken warmly about her daughter in interviews, noting that Kinley had already developed an impressive sense of humor at just three years old.
Katrina Law Net Worth
Katrina Law’s estimated net worth is $2 million as of 2026. Her wealth comes from more than two decades of television and film work, including series regular roles on Spartacus, Arrow, and NCIS.
Her consistent presence on major network productions has been the foundation of her income.
Additionally, her recurring Arrowverse appearances, film roles, and web series work have contributed to her financial profile over the years. Overall, her career reflects steady and durable earning power across multiple high-profile television franchises.
Katrina Law Social Media
Law is active on Instagram at @katrinalaw, where she shares career updates and behind-the-scenes content primarily related to her work on NCIS.
She is also active on X (formerly Twitter) at @KatrinaLaw.
Her social media presence has become increasingly focused on her professional life since joining NCIS as a series regular in 2021. Overall, her platforms reflect the disciplined, career-forward identity she has cultivated throughout her career.
Frequently Asked Questions
What is Katrina Law’s net worth?
Katrina Law’s estimated net worth is $2 million as of 2026. Her income comes from two decades of television work including series regular roles on Spartacus, Arrow, and NCIS.
How old is Katrina Law?
Law is 40 years old as of June 4, 2026. She was born on September 30, 1985, in Philadelphia, Pennsylvania.
Who was Katrina Law’s husband?
Law was married to actor and director Keith Andreen from January 2013 until she filed for divorce in August 2025, citing irreconcilable differences. They share one daughter, Kinley Malika.
What is Katrina Law’s height?
She stands at 5 feet 8 inches (1.73 meters) tall. She also holds a black belt in taekwondo.
Where was Katrina Law born?
Law was born in Philadelphia, Pennsylvania, and raised in Deptford Township, New Jersey.
What shows is Katrina Law known for?
She is best known for playing Mira in Spartacus: Blood and Sand, Nyssa al Ghul in Arrow, and Special Agent Jessica Knight in NCIS.
The Bottom Line
Katrina Law started her Hollywood career the right way, earning her SAG card on a John Travolta film set and then working every small role until the bigger ones arrived. She never took a shortcut, and that patience paid off with some of television’s most memorable characters.
Each role built directly on the one before it.
Furthermore, her transition from Spartacus to Arrow to NCIS shows a performer who knows how to reinvent herself within a genre while staying true to what she does best. Physical, disciplined, and emotionally present, she brings something real to every character she plays. Her story is still unfolding, and the best may still be ahead.
Overall, Katrina Law has earned her place among television’s most durable and respected action actresses. We hope you enjoyed reading about Katrina Law Actress. Feel free to share your thoughts in the comments below!