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 Henry Nixon Mason Finley Guest Star Dennis Apergis Ivan Guest Star Lou DiMaggio Nestor Carbone Guest Star Dalila Ali Rajah Mary Falco Guest Star Glenn Keogh Thompson Daly, Masked Man 1 Guest Star Michael Felix Petty Officer 3rd Class Gary Falco Guest Star Stephanie Y. Wang Port Authority Lt. Emily Shaw 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, Writer Donald P. Bellisario Executive Producer Allan Arkush Director