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 Scottie Thompson Jeanne Benoit Guest Star Joe Spano Senior FBI Agent T.C. Fornell Guest Star David Dayan Fisher Trent Kort Guest Star Rocky Carroll NCIS Director Leon Vance Guest Star Rob Arbogast FBI Special Agent Wentworth Guest Star Donald P. Bellisario Executive Producer Tony Wharmby Director Jesse Stern Writer Reed Steiner Writer