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 Joe Spano Senior FBI Agent T.C. Fornell Guest Star Scottie Thompson Jeanne Benoit Guest Star David Dayan Fisher Trent Kort Guest Star Peter Birkenhead Troy Webster Guest Star Sara Botsford Dr. Helen Berkley Guest Star J.C. MacKenzie Mitchell Reese Guest Star Mo Gallini Andre Jones Guest Star Patrick Robert Smith Tim Gerber Guest Star Donald P. Bellisario Executive Producer Martha Mitchell Director Steven D. Binder Writer