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 Ralph Waite Jackson Gibbs Guest Star Richard Lineback Chuck Winslow Guest Star Casey Sander Ed Gantry Guest Star Christian Campbell Nick Kingston Guest Star Dendrie Taylor Janet LaCombe Guest Star Kayla Mae Maloney Emily Kingston Guest Star Geno Monteiro Sgt. Seth Welch Guest Star Aviva Shannon Guest Star Donald P. Bellisario Executive Producer Jesse Stern Writer Tony Wharmby Director