Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Emily Wickersham Probationary NCIS Agent Eleanor "Ellie" Bishop Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Melinda McGraw Diane Sterling Guest Star Alex Veadov Sergei Mishnev Guest Star Jeri Ryan Rebecca Gibbs Guest Star Andy Milder Gene Guest Star Reggie Hayes Café Owner Guest Star Cesili Williams Café Waitress Guest Star Lucy Walsh Alice Guest Star Alvin Cowan Metro P.D. LEO Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Steven D. Binder Writer Alrick Riley Director