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 Sarah Jane Morris NCIS Special Agent Erica Jane "EJ" Barrett Guest Star Muse Watson Mike Franks Guest Star Matthew Willig NCIS Special Agent Simon Cade Guest Star Alimi Ballard NCIS Special Agent Gayne Levin Guest Star David Dayan Fisher Trent Kort Guest Star Kerr Smith Lt. Jonas Cobb Guest Star Donald P. Bellisario Executive Producer Jesse Stern Writer Tony Wharmby Director