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 Scott Bakula NCIS Special Agent Dwayne Pride Guest Star Lucas Black NCIS Special Agent Christopher LaSalle Guest Star Barry Shabaka Henley Earl Goddard Guest Star Alex Carter Knox Ellicott Guest Star Julia Whelan Greta Fensternacht Guest Star Desmond Askew John James Axiom Guest Star Brian Elerding Phil Kurjak Guest Star Greg Collins Police Officer Guest Star Gavin Leatherwood Dezic's Son Guest Star Pablo Espinosa Security Guard 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 Cindi Hemingway Writer Arvin Brown Director