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 Marisol Nichols ATF Special Agent Zoe Keates Guest Star Millie Bobby Brown Rachel Barnes Guest Star Josh Randall Navy Cmdr. Ryan Barnes Guest Star Kenneth Mitchell Nathan Curtis Guest Star Bronson Pinchot George Burton Guest Star Carlease Burke D'Arcy McKinna Guest Star R.C. Ormond Dorian Hobart Guest Star Brady Allen Benjamin Curtis Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Jennifer Corbett Writer Thomas J. Wright Director