© @Copyright HELLO! Hello! Magazine NCIS star Mark Harmon's real-life Pam Dawber is set to make her long-awaited debut on the long-running CBS procedural on Tuesday night. MORE: The best NCIS celebrity guest stars of all timePam will play seasoned investigative journalist Marcie Warren who reaches out to Gibbs after learning about the events that led to his suspension in the show's last instalment. According to the episode's synopsis, she will "use her savvy wit and down-to-earth people skills