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 Lauren Holly NCIS Director Jenny Shepard Actor David McCallum Dr. Donald "Ducky" Mallard Actor Brian Dietzen Jimmy Palmer Guest Star Joe Spano Senior FBI Agent T.C. Fornell Guest Star Dorian Brown Special Agent Courtney Krieger Guest Star Torri Higginson Dr. Jordan Hampton Guest Star Nikita Ager Shannon O'Hara Guest Star Joe Egender Robert Graves Guest Star Emerson Brooks Navy Lt. Carl Greer Guest Star Donald P. Bellisario Executive Producer Thomas J. Wright Director Jesse Stern Writer