Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Cote de Pablo NCIS Special Agent Ziva David Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Brian Dietzen Jimmy Palmer Guest Star Joe Spano Senior FBI Agent T.C. Fornell Guest Star Abby Brammell Marine Sgt. Heather Dempsey Guest Star Robert Curtis Brown Gary Tolin Guest Star Benjamin King Public Affairs Office Ron Sands Guest Star David Sullivan NCIS Special Agent Larry Krone Guest Star Jacqueline Hahn Kathy Tolin Guest Star Zack Weinstein Judd Dempsey Guest Star Larry Herron Master Gunnery Sgt. Jason Kelly Guest Star Lorenzo Callender Gene Abbott Guest Star Rayna Tharani Mary Roberts Guest Star Donald P. Bellisario Executive Producer Leslie Libman Director George Schenck Writer Frank Cardea Writer