Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Wilmer Valderrama NCIS Special Agent Nicholas "Nick" Torres Actor Maria Bello NCIS Special Agent Jacqueline "Jack" Sloane Actor Emily Wickersham NCIS Special Agent Eleanor "Ellie" Bishop Actor Brian Dietzen Dr. Jimmy Palmer Actor Duane Henry MI6 Officer Clayton Reeves Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Skye P. Marshall Sara Carter Guest Star Joseph Lyle Taylor Detective Edward Olson Guest Star DeVaughn Nixon Scott Gunderson Guest Star Briana Lane Diane Boyle Guest Star Jonah Wharton Robert Flynn Guest Star Dedan Donovan Jax Wesley Guest Star Mark Engelhardt Kent Marshall Guest Star Darren Dupree Washington Security Guard Guest Star Shamori Washington Theo Carter Guest Star Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer Scott Williams Executive Producer Donald P. Bellisario Executive Producer Gina Lucita Monreal Writer James Whitmore Jr. Director