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 Brian Dietzen Dr. Jimmy Palmer Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Joe Spano Senior FBI Agent T.C. Fornell Guest Star Melinda McGraw Diane Sterling Guest Star Danny Nucci Gordon Fremont Guest Star Colby French Viggo Kiln Guest Star Will Beinbrink Oliver Lambert Guest Star J. Downing Avis Boyle Guest Star Trevor Torseth Al Parker Guest Star Noree Victoria Maid of Honor Guest Star Brendan Bradley Male Guest Guest Star Donald P. Bellisario Executive Producer Steven D. Binder Writer Arvin Brown Director