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 Angela Lin Assistant District Attorney Sheila Addison Guest Star Amanda Detmer Charlotte James Bodizinski Guest Star Michael Chieffo Randy Devereaux Guest Star Jason Downs Todd Renfro Guest Star Sarah Stouffer Hanna Devereaux Guest Star Troy Blendell Bernard Wilson Guest Star Greg Berman Navy Petty Officer Second Class Mike Benson Guest Star Michael Rupnow Parker James Guest Star Mary Margaret Lewis Maude Simmons Guest Star Sandra Cevallos-Campanella Judge Monic Perez Guest Star Maryfrances Careccia Bailiff Guest Star Hilda Boulware Madam Foreperson 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 Margaret Rose Lester Writer David J. North Writer Brendan Fehily Writer Tawnia McKiernan Director