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 Rodney To Dr. Steven Cho Guest Star Eileen Galindo Evelyn Gomez Guest Star James Leo Ryan Richard Oscar Shea, Ricochet Guest Star Ray Stoney Ben Golden Guest Star Seth Coltan Deputy Allen Smedley Guest Star Granville Ames Hank Guest Star Kaley Ronayne Rhonda Collins Guest Star Mark Berry Joe Guest Star Juan Alfonso Ramon Moncada Guest Star Zylan Brooks Catherine Scott 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 Brendan Fehily Writer Bethany Rooney Director