Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Emily Wickersham Probationary NCIS Agent Eleanor "Ellie" Bishop Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Sarah Clarke FBI Special Agent Tess Monroe Guest Star Duane Henry Clayton Reeves Guest Star Joe Spano Senior FBI Agent T.C. Fornell Guest Star Juliette Angelo Emily Fornell Guest Star David Dayan Fisher Trent Kort Guest Star Vince Nappo Jacob Scott Guest Star Damian O'Hare Allen Kane Guest Star Mia Barron Dr. Katrina Griffin Guest Star Adria Tennor Angela Dresser Guest Star Taja V. Simpson Misha Rose Guest Star Sandra Nelson Jessica Terdei Guest Star Kamal Jones Paramedic Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer, Writer Scott Williams Executive Producer Donald P. Bellisario Executive Producer James Whitmore Jr. Director