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 James Morrison Sen. John Phillips Guest Star Jonathan Kite Chet Goodman Guest Star Aaron Jennings Seth Hendrix Guest Star Amanda Payton Misty Boxlarter Guest Star Michael Masini Axel McKenzie III Guest Star Nicki Micheaux Metro P.D. Detective Martha Mayer Guest Star Franco Barberis Marine Gunnery Sgt. Matt Lecroix Guest Star Blake Webb Chandler Phillips Guest Star Joey Stromberg Marine Cpl. Gig Girard 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 Christopher J. Waild Writer Alrick Riley Director