Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Emily Wickersham Probationary NCIS Agent Eleanor "Ellie" Bishop Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Margo Harshman Delilah Fielding Guest Star Manoel Felciano CIA Case Officer Jim Brisco Guest Star Richard Ruccolo Ronald Troutman Guest Star Donny Boaz Navy Lt. Kit Jones Guest Star Stephanie Lemelin Melody Hanson Guest Star Olesya Rulin Kim Troutman Guest Star Clayton Snyder Sampson Guest Star Tom Everett CIA Head of Intelligence Kirkwood Zaysen Guest Star Julia Cho Ginger Uwanawich Guest Star Michelle Ann Johnson DOD Counterintelligence Supervisor Emma Fisher Guest Star Erin Allin O'Reilly Heidi Partridge Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Christopher J. Walid Writer Terrence O'Hara Director