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 Jennifer Esposito NCIS Special Agent Alexandra "Alex" Quinn Actor Emily Wickersham NCIS Probationary 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 Tony Gonzalez NCIS Special Agent Tony Francis Guest Star Emily Alabi Petty Officer Kelly Ristow Guest Star Paul Schackman Sullivan Brady Guest Star Jonathan Del Arco Ned Senders Guest Star Richard Fancy Leonard Weiss Guest Star Andrew Hawkes Detective Dan Campbell Guest Star Eric Petersen "Pale" Dale Matteson Guest Star Nick Puga TSA Agent Gregg Rogers Guest Star Josh Latzer Olek Lazarenko 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 Thomas J. Wright Director