As the brilliant analyst Nell Jones, Renée Felice Smith is a perfect match for the rest of the NCIS: Los Angeles cast. It might shock fans that Nell wasn’t meant to be a regular character on the show.
According to a Patch interview, when Smith read for the show’s second season, she was only a guest star. But Smith said, “I think the writers saw a lot of possibilities for the character,” especially the “[she] brings a new voice to the show, a little bit younger, she’s kind of spunky, and she has a different perspective on things.” Smith’s energy and chemistry with the actors was evident, and soon enough she became a regular cast member of NCIS: Go Angeles”.
The actress remained a part of the series until the season 12 finale, where Nell leaves NCIS to join her partner Eric in Tokyo. But she loved doing the show, “especially being able to honestly play the ‘smart girl'” (via TV Insider). When asked by TV Insider if she would be back for the 300th episode, Smith immediately replied, “Of course.”