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 Scottie Thompson Jeanne Benoit Guest Star Lawrence Pressman Dr. Russell Pike Guest Star Kevin Alejandro Jamie Jones Guest Star Peter Giles Torsten Engler Guest Star Deidrie Henry Tracy Taylor Guest Star Corey Stoll Martin Quinn Guest Star David Dayan Fisher Trent Kort Guest Star Sandra Hess Regine Smidt Guest Star Ajay Mehta Parviz Najar Guest Star Jennifer Costa Navy Lt. Roni Seabrook Guest Star Donald P. Bellisario Executive Producer Dennis Smith Director Nell Scovell Writer John C. Kelley Writer Ric Arthur Writer