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 Annie Wersching Deputy DA Gail Walsh Guest Star Ben Toplin Navy Petty Officer Jerry Neisler Guest Star Jamie McShane Samuel Hayes Guest Star Joe Adler Matthew Gray Guest Star James Carpinello Smitty Brown Guest Star Paul Conkling Hunter Guest Star Jeffrey Thomas Border Nog Drinker Guest Star Donald P. Bellisario Executive Producer James Whitmore Jr. Director Steven D. Binder Writer