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 Skyler Maxon Navy Petty Officer 1st Class Matthew Dean Guest Star Sumalee Montano Nicole Taggart Guest Star Erin Krakow Elizabeth Dean Guest Star J. Claude Deering Curtis Hubley Guest Star Anthony Alabi Navy Petty Officer Christopher Clayton Guest Star Greg Bryan Donald Burke Guest Star Jay Jablonski Navy Cdr. Peter Josephson Guest Star Alicia Urizar Gabriella Guest Star Helen Sadler Julie Guest Star Matthew Crowley Doug Guest Star Emanuel Borria Ricardo Guest Star Harold Cannon-Lopez Elderly Man Guest Star Ludo Vika Sister Lucita Guest Star Ethan Torres Enrique Guest Star Adolfo Alvarez Carlos Guest Star Alonso Alvarez Ramon Guest Star Hans Marrero R.A.C. Guard 1 Guest Star Jandres Burgos R.A.C. Guard 2 Guest Star Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer, Writer George Schenck Executive Producer Steven D. Binder Executive Producer, Writer Scott Williams Executive Producer Donald P. Bellisario Executive Producer George Schneck Writer Tony Wharmby Director