Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Sean Murray NCIS Special Agent Timothy McGee Actor Emily Wickersham NCIS Special Agent Eleanor "Ellie" Bishop Actor Wilmer Valderrama NCIS Special Agent Nicholas "Nick" Torres Actor Maria Bello Special Agent Jacqueline "Jack" Sloane Actor Brian Dietzen Dr. Jimmy Palmer Actor Diona Reasonover Forensic Scientist Kasie Hines Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Joe Spano Tobias "T.C." Fornell Guest Star Tom Wilson Abgus Demint Guest Star Anthony Konechny Simon Felcher Guest Star Bahni Turpin Camille West Guest Star Nick Boraine Merriweather, Man Guest Star Anna Grace Barlow Karen Guest Star Tamika Simpkins Jill Guest Star Isiah Adams Shift Manager Chad Guest Star Benny Briseño Xander Price Guest Star Sheva Cohen Margot Demint 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. Walid Writer Diana Valentine Director