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 Ralph Waite Jackson Gibbs Guest Star Muse Watson Mike Franks Guest Star Marco Sanchez Alejandro Rivera Guest Star Jacqueline Obradors Paloma Reynosa Guest Star Andrew Thacher State Police Sgt. Paul Westgard Guest Star Burton Perez Estaban Lopez Guest Star Donald P. Bellisario Executive Producer Dennis Smith Director Gary Glasberg Writer