Katrina Law has become one of the most beloved members of the NCIS family, but her journey to the series began long before she ever stepped into the role of Jessica Knight. Born on September 30, 1985, in Philadelphia, Katrina comes from a diverse background. Her mother is from Taiwan, while her father is of German and Italian heritage. She grew up in New Jersey, where she developed a passion for sports, dance, martial arts, and performing arts from an early age.
Before joining NCIS, Katrina built an impressive career through a variety of popular television roles. Many fans first discovered her as Mira in Spartacus. She later appeared in major series such as Arrow, where she played Nyssa al Ghul, and Hawaii Five-0, where she portrayed Quinn Liu. Her experience in action oriented roles helped prepare her for the demanding world of NCIS.

Away from the cameras, Katrina is married to actor Keith Andreen, and the couple share a daughter. Despite her busy schedule, she often speaks about the importance of family and enjoys spending time outdoors, traveling, and staying active. One interesting fact many fans love is that Katrina holds a black belt in Taekwondo, a skill that has helped her perform many of her own action scenes throughout her career.
When Katrina joined NCIS as Special Agent Jessica Knight, she faced the challenge of entering a cast with a long history and a passionate fan base. Yet it did not take long for viewers to embrace her. Jessica Knight quickly stood out as confident, intelligent, compassionate, and fearless under pressure. She brought a fresh energy to the team while still fitting naturally into the show’s established dynamic.
One of the reasons fans connected with Knight so quickly was her balance of strength and humanity. She could handle dangerous investigations with confidence while also showing vulnerability and genuine care for her teammates. Her partnership with Jimmy Palmer became one of the most talked about relationships on the show, giving viewers another reason to invest in her character.

Behind the scenes, Katrina is known for her positive attitude and strong work ethic. Several of her castmates have praised her professionalism, kindness, and ability to make people feel comfortable on set. Colleagues often describe her as energetic, hardworking, and someone who brings a fun atmosphere wherever she goes. Fans have also noticed how naturally she fits in with the cast during interviews, conventions, and behind the scenes content.
Today, Jessica Knight is no longer viewed as a newcomer. She has become an essential part of the NCIS team and one of the show’s most popular modern era characters. Through her talent, dedication, and genuine personality, Katrina Law has earned the respect of her fellow actors and the admiration of countless fans around the world. For many viewers, it is now difficult to imagine NCIS without Jessica Knight standing beside the team.