Sarah Clarke – Tess Monroe
Sarah Clarke had already established herself as Nina Myers on the action show 24 when she first appeared on NCIS as a guest star. In the 2008 film Twilight, she played Bella Swan’s mother! NCIS teased her return after a guest appearance, but her character, FBI Special Agent Tess Monroe, would only be a recurring role. Since then, you’ve probably seen her on shows like Trust Me, Covert Affairs, and Bosch on Amazon.
Laura San Giacomo – Grace Confalone
Laura San Giacomo has made several guest appearances on NCIS as Dr. Grace Confalone, but she has remained a minor character in the series. In the show, she became Gibbs’ confidante and someone he went to for advice. Laura is rarely seen in movies or on TV these days, but her two most popular projects are Pretty Woman (where she played Julia Roberts’ best friend) and Just Shoot Me!, a comedy show. We hope to see her on NCIS or elsewhere soon!